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The Company operates in one segment and is headquartered in Carmel, Indiana with operations in South San Francisco, California and Groton, Connecticut.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company’s HBV-cure program is pursuing multiple drug candidates that inhibit the HBV lifecycle and block the generation of covalently closed circular DNA (cccDNA), with the aim of increasing the current low cure rates for patients with HBV. Assembly has discovered several novel core inhibitors, which are small molecules that directly target and allosterically modify the HBV core (HBc) protein.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company’s Microbiome program consists of a fully integrated platform that includes a strain isolation, identification, characterization and function-based selection process, methods for strain purification and growth under current Good Manufacturing Practice (cGMP) conditions, and a licensed patented delivery system, GEMICEL®, which is designed to allow for targeted oral delivery of live biologic and conventional therapies to the lower gastrointestinal (GI) tract. Using the Company’s microbiome platform capabilities, the Company is exploring product candidates for multiple disease indications, including ulcerative colitis (UC), Crohn’s disease and irritable bowel syndrome (IBS) with Allergan Pharmaceuticals International Limited (Allergan) in connection with the Research, Development, Collaboration and License Agreement (the Collaboration Agreement), as well as non-alcoholic steatohepatitis (NASH) and immuno-oncology, which indications the Company will pursue either internally or in collaboration with other parties.</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 10pt 0pt;">Liquidity</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company has not derived any revenue from product sales to date and currently has no approved products. Once a product has been developed, it will need to be approved for sale by the U.S. Food and Drug Administration (FDA) or an applicable foreign regulatory agency. Since inception, the Company’s operations have been financed primarily through the sale of equity securities, the proceeds from the exercise of warrants and stock options, the issuance of debt and an upfront payment related to the Collaboration Agreement. The Company has incurred losses from operations since inception and expects to continue to incur substantial losses for the next several years as it continues its product development efforts. Management believes the Company currently has sufficient funds to meet its operating requirements for at least the next twelve months following the date that these unaudited condensed consolidated interim financial statements are issued. If the Company cannot generate significant cash from its operations, it intends to obtain any additional funding it requires through strategic relationships, public or private equity or debt financings, grants or other arrangements. The Company cannot assure such funding will be available on reasonable terms, if at all.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">If the Company is unable to generate enough revenue from the Collaboration Agreement when needed or to secure additional sources of funding and receive related full and timely collections of amounts due, it may be necessary to significantly reduce the current rate of spending through reductions in staff and delaying, scaling back, or stopping certain research and development programs, including more costly clinical trials.</p> 1 0 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 2 - Summary of Significant Accounting Policies and Recent Accounting Pronouncements</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Basis of Presentation</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The accompanying unaudited interim condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with the accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and pursuant to the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the U.S. Securities and Exchange Commission (SEC). In management’s opinion, the unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual audited consolidated financial statements and include normal recurring adjustments necessary for the fair presentation of the Company’s financial position and its results of operations and comprehensive loss and its cash flows for the periods presented. These statements do not include all disclosures required by GAAP and should be read in conjunction with the Company’s audited consolidated financial statements and accompanying notes for the fiscal year ended December 31, 2018, which is contained in the Company’s Annual Report on Form 10-K as filed with the SEC on February 28, 2019. The results for the three and six months ended June 30, 2019 are not necessarily indicative of results to be expected for the entire year ending December 31, 2019 or future operating periods.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Use of Estimates</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The preparation of the unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that may affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of expenses during the reporting period. Actual results could differ from those estimates.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Significant estimates inherent in the preparation of the accompanying unaudited condensed consolidated financial statements include revenue recognition, clinical trial accruals, recoverability and useful lives (indefinite or finite) of intangible assets, assessment of impairment of goodwill, provisions for income taxes, amounts receivable and recognized as revenue under the Collaboration Agreement, measurement of operating lease liabilities, and the fair value of stock options, stock appreciation rights, and restricted stock units (RSUs) granted to employees, directors and consultants.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company’s estimates could be affected by external conditions, including those unique to the Company and general economic conditions. It is reasonably possible that these external factors could have an effect on the Company’s estimates and could cause actual results to differ from those estimates and assumptions.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Significant Accounting Policies</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">There have been no material changes to the Company’s significant accounting policies from those described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, other than as set forth below.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Stock-Based Compensation</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company expenses stock-based compensation to employees and Board members over the requisite service period based on the estimated grant-date fair value of the awards. Stock-based awards with graded-vesting schedules are recognized using the accelerated attribution method over the requisite service period for each separately vesting portion of the award.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Prior to the adoption of Accounting Standards Update (ASU) 2018-07 (ASU 2018-07) on January 1, 2019, the Company remeasured the fair value of the non-employee awards at each reporting period prior to vesting and finally at the vesting date of the award. Changes in the estimated fair value of these non-employee awards were recognized as compensation expense in the period of change. Subsequent to the adoption of ASU 2018-07, the Company recognizes non-employee compensation costs over the requisite service period based on a measurement of fair value for each stock award.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company estimates the fair value of stock option grants using the Black-Scholes option pricing model and the assumptions used in calculating the fair value of stock-based awards represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Forfeitures are recognized when incurred.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The fair value of restricted stock units is determined based on the number of shares granted and the quoted market price of the Company’s common stock on the date of grant. The fair value of restricted stock units with performance conditions deemed probable of being achieved and vesting are amortized to expense over the requisite service period using the accelerated attribution method of expense recognition.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Leases</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">All of the Company’s leases are operating leases for facilities and equipment. Prior to January 1, 2019, the Company recognized related rent expense on a straight-line basis over the term of the lease. Incentives granted under the Company’s facilities lease, including allowances for leasehold improvements and rent holidays, were recognized as reductions to rental expense on a straight-line basis over the term of the lease. Deferred rent consisted of the difference between cash payments and the rent expense recognized.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Subsequent to the adoption of the new leasing standard on January 1, 2019, the Company recognizes a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The Company determines whether an arrangement is or contains a lease at contract inception. Operating leases are included in operating lease right-of-use assets, operating lease liabilities - short-term, and operating lease liabilities - long-term in our condensed consolidated balance sheet at June 30, 2019. Operating lease right-of-use assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. In determining the net present value of lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The incremental borrowing rate represents the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of a lease. The Company considers a lease term to be the noncancelable period that it has the right to use the underlying asset, including any periods where it is reasonably assured the Company will exercise the option to extend the contract. Periods covered by an option to extend are included in the lease term if the lessor controls the exercise of that option.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The operating lease right-of-use assets also include any lease payments made and exclude lease incentives. Lease expense is recognized on a straight-line basis over the expected lease term. Variable lease expenses are recorded when incurred. The Company has elected to not separate lease and non-lease components for its leased assets and account for all lease and non-lease components of its agreements as a single lease component.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Net Loss per Share</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Basic net loss per common share excludes dilution and is computed by dividing net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per common share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity unless inclusion of such shares would be anti-dilutive. Since the Company has only incurred losses, basic and diluted net loss per share is the same. Securities that could potentially dilute loss per share in the future that were not included in the computation of diluted loss per share are as follows:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:25.49%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Warrants to purchase common stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,296</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,296</p></td></tr><tr><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Options to purchase common stock</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,203,935</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,740,674</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Common stock subject to purchase under ESPP</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,976</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr><tr><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Unvested RSUs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 489,857</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 350,059</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,715,064</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,106,029</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">A reconciliation of the numerators and the denominators of the basic and diluted net loss per common share computations is as follows (in thousands, except per share amounts):</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.67%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Numerator:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Net loss (in thousands)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (18,503)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (26,806)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (45,555)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (43,055)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Denominator:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Weighted average common shares outstanding for diluted net loss per share</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 25,740,500</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,541,549</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 25,690,617</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,387,532</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Net loss per share:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Basic</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (0.72)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.30)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.77)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2.11)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Diluted</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (0.72)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.30)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.77)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2.11)</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Adoption of Recent Accounting Pronouncements</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In February 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-02, <i style="font-style:italic;">Leases </i>(ASU 2016-02). Under this standard, which applies to both lessors and lessees, lessees will be required to recognize all leases (except for short-term leases) as a lease liability, which is a lessee’s obligation to make lease payments arising from a lease measured on a discounted basis, and as a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Leases will be classified as either financing or operating, with classification affecting the pattern of expense recognition in the income statement. In January, July and December 2018 and March 2019, the FASB issued additional amendments to the new lease guidance related to transition and clarification.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company adopted ASU 2016-02 on January 1, 2019 using the modified retrospective approach and elected the package of practical expedients permitted under transition guidance, which allowed the Company to carry forward its historical assessments of: (1) whether contracts are or contain leases, (2) lease classification and (3) initial direct costs. The Company did not elect the use-of-hindsight practical expedient, which would require the Company to reassess the lease term of its leases based on all facts and circumstances through the effective date, and the Company did not elect the practical expedient pertaining to land easements as this is not applicable to the Company’s current contract portfolio. The Company elected the post-transition practical expedient to not separate lease components from nonlease components for all existing lease classes. The Company also elected a policy of not recording leases on its condensed consolidated balance sheets when the leases have a term of 12 months or less and the Company is not reasonably certain to elect an option to purchase the leased asset.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The adoption of this standard resulted in the recognition of right of use (ROU) assets and lease liabilities of $13.8 million and $14.0 million, respectively, and the derecognition of the deferred rent balance of $0.1 million as of January 1, 2019. The adoption of the standard had no impact on the Company’s condensed consolidated statements of operations and comprehensive loss or to its cash flows from or used in operating, financing, or investing activities on its condensed consolidated statements of cash flows. No cumulative-effect adjustment within accumulated deficit was required to be recorded as a result of adopting this standard.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On January 1, 2019, the Company adopted ASU 2018-02, <i style="font-style:italic;">Income Statement - Reporting Comprehensive Income, (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,</i> which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the federal corporate income tax rate enacted under the Tax Cuts and Jobs Act (the Tax Act). The amount of the reclassification would be the difference between the historical corporate income tax rate and the Tax Act’s 21% corporate income tax rate. The Company’s adoption of this standard did not have a material impact on its condensed consolidated financial statements.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On January 1, 2019, the Company adopted ASU 2018-15, <i style="font-style:italic;">Intangibles (Topic 350): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract</i>, which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This new standard also requires customers to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangement. This new standard can be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the effect that the updated standard will have on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On January 1, 2019, the Company adopted ASU 2018-07, <i style="font-style:italic;">Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting</i> (ASU 2018-07), which simplifies several aspects of the accounting for nonemployee share-based payment transactions resulting from expanding the scope of Topic 718, <i style="font-style:italic;">Compensation – Stock Compensation</i> to include share-based payment transactions for acquiring goods and services from nonemployees. The Company’s adoption of this standard did not have a material impact on its condensed consolidated financial statements.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In August 2018, the SEC adopted amendments to certain disclosure requirements in Securities Act Release No. 33-10532, <i style="font-style:italic;">Disclosure Update and Simplification</i>. The amendments became effective on November 5, 2018 and impact the Company’s condensed consolidated financial statements through, among other things, the addition of a requirement to present a statement of stockholders’ equity for interim periods. As a result of adopting this guidance, the Company is presenting comparative interim statements of stockholders’ equity in this Form 10-Q for the quarters ended June 30, 2019 and 2018. Additionally, the guidance also simplified certain non-material disclosures in its SEC filings.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Recent Accounting Pronouncements</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In November 2018, the FASB issued ASU 2018-18, <i style="font-style:italic;">Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606</i>, which clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in Topic 606 should be applied, including recognition, measurement, presentation, and disclosure requirements. The standard adds unit-of-account guidance in Topic 808 to align with the guidance in Topic 606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within the scope of Topic 606 and requires that in a transaction with a collaborative arrangement participant that is not directly related to sales to third parties, presenting the transaction together with revenue recognized under Topic 606 is precluded if the collaborative arrangement participant is not a customer. The standard is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, including adoption in any interim period for public business entities for periods in which financial statements have not been issued. Amendments in the standard should be applied retrospectively to the date of initial application of Topic 606, but entities may elect to apply the amendments in Topic 808 retrospectively either to all contracts or only to contracts that are not completed at the date of initial application of Topic 606, and should disclose the election. An entity may also elect to apply the practical expedient for contract modifications that is permitted for entities using the modified retrospective transition method in Topic 606. The Company is currently assessing the impact of this standard on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In August 2018, the FASB issued ASU 2018-13, <i style="font-style:italic;">Fair Value Measurement (Topic 820):  Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement,</i> which makes a number of changes meant to add, modify or remove certain disclosure requirements associated with the movement amongst or hierarchy associated with Level 1, Level 2 and Level 3 fair value measurements. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted upon issuance of the update. The Company does not expect the adoption of this guidance to have a material impact on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In January 2017, the FASB issued ASU 2017-04, <i style="font-style:italic;">Intangibles-Goodwill and Other (Topic 350):</i> <i style="font-style:italic;">Simplifying the Test for Goodwill Impairment</i> (ASU 2017-04), which simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. Under the amendments in ASU 2017-04, an entity should recognize an impairment charge for the amount by which the carrying amount of a reporting unit exceeds its fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The updated guidance requires a prospective adoption. ASU 2017-04 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the timing and impact of adopting this new accounting standard on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">In June 2016, the FASB issued ASU 2016-13, <i style="font-style:italic;">Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments</i>, which requires that expected credit losses relating to financial assets measured on an amortized cost basis and available-for-sale debt securities be recorded through an allowance for credit losses. ASU 2016-13 limits the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and also requires the reversal of previously recognized credit losses if fair value increases. In April 2019, the FASB issued ASU 2014-04, <i style="font-style:italic;">Codification Improvements to Topic 326 Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments</i>, which clarifies certain aspects of the accounting for credit losses, hedging activities and financial instruments. In May 2019, the FASB issued ASU 2019-05, <i style="font-style:italic;">Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief</i>, which provides transition relief for entities adopting the Board’s credit losses standard. Specifically, ASU 2019-05 amends ASU 2016-13 to allow companies to irrevocably elect, upon adoption of ASU 2016-13, the fair value option for financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of the credit losses guidance in Accounting Standards Codification (ASC) 326-20, (3) are eligible for the fair value option under ASC 825-10, and (4) are not held-to-maturity debt securities. The new standard will be effective on January 1, 2020. Early adoption is available. The Company is currently evaluating the effect that the updated standard will have on its condensed consolidated financial statements and related disclosures.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Basis of Presentation</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The accompanying unaudited interim condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with the accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and pursuant to the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the U.S. Securities and Exchange Commission (SEC). In management’s opinion, the unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual audited consolidated financial statements and include normal recurring adjustments necessary for the fair presentation of the Company’s financial position and its results of operations and comprehensive loss and its cash flows for the periods presented. These statements do not include all disclosures required by GAAP and should be read in conjunction with the Company’s audited consolidated financial statements and accompanying notes for the fiscal year ended December 31, 2018, which is contained in the Company’s Annual Report on Form 10-K as filed with the SEC on February 28, 2019. The results for the three and six months ended June 30, 2019 are not necessarily indicative of results to be expected for the entire year ending December 31, 2019 or future operating periods.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Use of Estimates</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The preparation of the unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that may affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of expenses during the reporting period. Actual results could differ from those estimates.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Significant estimates inherent in the preparation of the accompanying unaudited condensed consolidated financial statements include revenue recognition, clinical trial accruals, recoverability and useful lives (indefinite or finite) of intangible assets, assessment of impairment of goodwill, provisions for income taxes, amounts receivable and recognized as revenue under the Collaboration Agreement, measurement of operating lease liabilities, and the fair value of stock options, stock appreciation rights, and restricted stock units (RSUs) granted to employees, directors and consultants.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company’s estimates could be affected by external conditions, including those unique to the Company and general economic conditions. It is reasonably possible that these external factors could have an effect on the Company’s estimates and could cause actual results to differ from those estimates and assumptions.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Significant Accounting Policies</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">There have been no material changes to the Company’s significant accounting policies from those described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, other than as set forth below.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Stock-Based Compensation</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company expenses stock-based compensation to employees and Board members over the requisite service period based on the estimated grant-date fair value of the awards. Stock-based awards with graded-vesting schedules are recognized using the accelerated attribution method over the requisite service period for each separately vesting portion of the award.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Prior to the adoption of Accounting Standards Update (ASU) 2018-07 (ASU 2018-07) on January 1, 2019, the Company remeasured the fair value of the non-employee awards at each reporting period prior to vesting and finally at the vesting date of the award. Changes in the estimated fair value of these non-employee awards were recognized as compensation expense in the period of change. Subsequent to the adoption of ASU 2018-07, the Company recognizes non-employee compensation costs over the requisite service period based on a measurement of fair value for each stock award.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company estimates the fair value of stock option grants using the Black-Scholes option pricing model and the assumptions used in calculating the fair value of stock-based awards represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Forfeitures are recognized when incurred.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The fair value of restricted stock units is determined based on the number of shares granted and the quoted market price of the Company’s common stock on the date of grant. The fair value of restricted stock units with performance conditions deemed probable of being achieved and vesting are amortized to expense over the requisite service period using the accelerated attribution method of expense recognition.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Leases</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">All of the Company’s leases are operating leases for facilities and equipment. Prior to January 1, 2019, the Company recognized related rent expense on a straight-line basis over the term of the lease. Incentives granted under the Company’s facilities lease, including allowances for leasehold improvements and rent holidays, were recognized as reductions to rental expense on a straight-line basis over the term of the lease. Deferred rent consisted of the difference between cash payments and the rent expense recognized.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Subsequent to the adoption of the new leasing standard on January 1, 2019, the Company recognizes a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The Company determines whether an arrangement is or contains a lease at contract inception. Operating leases are included in operating lease right-of-use assets, operating lease liabilities - short-term, and operating lease liabilities - long-term in our condensed consolidated balance sheet at June 30, 2019. Operating lease right-of-use assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. In determining the net present value of lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The incremental borrowing rate represents the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of a lease. The Company considers a lease term to be the noncancelable period that it has the right to use the underlying asset, including any periods where it is reasonably assured the Company will exercise the option to extend the contract. Periods covered by an option to extend are included in the lease term if the lessor controls the exercise of that option.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The operating lease right-of-use assets also include any lease payments made and exclude lease incentives. Lease expense is recognized on a straight-line basis over the expected lease term. Variable lease expenses are recorded when incurred. The Company has elected to not separate lease and non-lease components for its leased assets and account for all lease and non-lease components of its agreements as a single lease component.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Net Loss per Share</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Basic net loss per common share excludes dilution and is computed by dividing net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per common share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity unless inclusion of such shares would be anti-dilutive. Since the Company has only incurred losses, basic and diluted net loss per share is the same. Securities that could potentially dilute loss per share in the future that were not included in the computation of diluted loss per share are as follows:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:25.49%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Warrants to purchase common stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,296</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,296</p></td></tr><tr><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Options to purchase common stock</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,203,935</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,740,674</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Common stock subject to purchase under ESPP</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,976</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr><tr><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Unvested RSUs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 489,857</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 350,059</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,715,064</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,106,029</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">A reconciliation of the numerators and the denominators of the basic and diluted net loss per common share computations is as follows (in thousands, except per share amounts):</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.67%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Numerator:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Net loss (in thousands)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (18,503)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (26,806)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (45,555)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (43,055)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Denominator:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Weighted average common shares outstanding for diluted net loss per share</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 25,740,500</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,541,549</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 25,690,617</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,387,532</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Net loss per share:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Basic</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (0.72)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.30)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.77)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2.11)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Diluted</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (0.72)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.30)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.77)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2.11)</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p> <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:25.49%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Warrants to purchase common stock</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,296</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,296</p></td></tr><tr><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Options to purchase common stock</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,203,935</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,740,674</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Common stock subject to purchase under ESPP</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,976</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr><tr><td style="vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Unvested RSUs</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 489,857</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 350,059</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:72.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,715,064</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,106,029</p></td></tr></table> 15296 15296 5203935 4740674 5976 489857 350059 5715064 5106029 <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:30.67%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.29%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:14.3%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Numerator:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Net loss (in thousands)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (18,503)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (26,806)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (45,555)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (43,055)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Denominator:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Weighted average common shares outstanding for diluted net loss per share</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 25,740,500</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,541,549</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 25,690,617</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,387,532</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Net loss per share:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Basic</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (0.72)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.30)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.77)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2.11)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:34.55%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Diluted</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (0.72)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.30)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1.77)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2.11)</p></td></tr></table> -18503000 -26806000 -45555000 -43055000 25740500 20541549 25690617 20387532 -0.72 -1.30 -1.77 -2.11 -0.72 -1.30 -1.77 -2.11 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Adoption of Recent Accounting Pronouncements</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In February 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-02, <i style="font-style:italic;">Leases </i>(ASU 2016-02). Under this standard, which applies to both lessors and lessees, lessees will be required to recognize all leases (except for short-term leases) as a lease liability, which is a lessee’s obligation to make lease payments arising from a lease measured on a discounted basis, and as a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Leases will be classified as either financing or operating, with classification affecting the pattern of expense recognition in the income statement. In January, July and December 2018 and March 2019, the FASB issued additional amendments to the new lease guidance related to transition and clarification.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company adopted ASU 2016-02 on January 1, 2019 using the modified retrospective approach and elected the package of practical expedients permitted under transition guidance, which allowed the Company to carry forward its historical assessments of: (1) whether contracts are or contain leases, (2) lease classification and (3) initial direct costs. The Company did not elect the use-of-hindsight practical expedient, which would require the Company to reassess the lease term of its leases based on all facts and circumstances through the effective date, and the Company did not elect the practical expedient pertaining to land easements as this is not applicable to the Company’s current contract portfolio. The Company elected the post-transition practical expedient to not separate lease components from nonlease components for all existing lease classes. The Company also elected a policy of not recording leases on its condensed consolidated balance sheets when the leases have a term of 12 months or less and the Company is not reasonably certain to elect an option to purchase the leased asset.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The adoption of this standard resulted in the recognition of right of use (ROU) assets and lease liabilities of $13.8 million and $14.0 million, respectively, and the derecognition of the deferred rent balance of $0.1 million as of January 1, 2019. The adoption of the standard had no impact on the Company’s condensed consolidated statements of operations and comprehensive loss or to its cash flows from or used in operating, financing, or investing activities on its condensed consolidated statements of cash flows. No cumulative-effect adjustment within accumulated deficit was required to be recorded as a result of adopting this standard.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On January 1, 2019, the Company adopted ASU 2018-02, <i style="font-style:italic;">Income Statement - Reporting Comprehensive Income, (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,</i> which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the federal corporate income tax rate enacted under the Tax Cuts and Jobs Act (the Tax Act). The amount of the reclassification would be the difference between the historical corporate income tax rate and the Tax Act’s 21% corporate income tax rate. The Company’s adoption of this standard did not have a material impact on its condensed consolidated financial statements.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On January 1, 2019, the Company adopted ASU 2018-15, <i style="font-style:italic;">Intangibles (Topic 350): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract</i>, which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This new standard also requires customers to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangement. This new standard can be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the effect that the updated standard will have on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On January 1, 2019, the Company adopted ASU 2018-07, <i style="font-style:italic;">Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting</i> (ASU 2018-07), which simplifies several aspects of the accounting for nonemployee share-based payment transactions resulting from expanding the scope of Topic 718, <i style="font-style:italic;">Compensation – Stock Compensation</i> to include share-based payment transactions for acquiring goods and services from nonemployees. The Company’s adoption of this standard did not have a material impact on its condensed consolidated financial statements.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In August 2018, the SEC adopted amendments to certain disclosure requirements in Securities Act Release No. 33-10532, <i style="font-style:italic;">Disclosure Update and Simplification</i>. The amendments became effective on November 5, 2018 and impact the Company’s condensed consolidated financial statements through, among other things, the addition of a requirement to present a statement of stockholders’ equity for interim periods. As a result of adopting this guidance, the Company is presenting comparative interim statements of stockholders’ equity in this Form 10-Q for the quarters ended June 30, 2019 and 2018. Additionally, the guidance also simplified certain non-material disclosures in its SEC filings.</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Recent Accounting Pronouncements</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In November 2018, the FASB issued ASU 2018-18, <i style="font-style:italic;">Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606</i>, which clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in Topic 606 should be applied, including recognition, measurement, presentation, and disclosure requirements. The standard adds unit-of-account guidance in Topic 808 to align with the guidance in Topic 606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within the scope of Topic 606 and requires that in a transaction with a collaborative arrangement participant that is not directly related to sales to third parties, presenting the transaction together with revenue recognized under Topic 606 is precluded if the collaborative arrangement participant is not a customer. The standard is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, including adoption in any interim period for public business entities for periods in which financial statements have not been issued. Amendments in the standard should be applied retrospectively to the date of initial application of Topic 606, but entities may elect to apply the amendments in Topic 808 retrospectively either to all contracts or only to contracts that are not completed at the date of initial application of Topic 606, and should disclose the election. An entity may also elect to apply the practical expedient for contract modifications that is permitted for entities using the modified retrospective transition method in Topic 606. The Company is currently assessing the impact of this standard on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In August 2018, the FASB issued ASU 2018-13, <i style="font-style:italic;">Fair Value Measurement (Topic 820):  Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement,</i> which makes a number of changes meant to add, modify or remove certain disclosure requirements associated with the movement amongst or hierarchy associated with Level 1, Level 2 and Level 3 fair value measurements. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted upon issuance of the update. The Company does not expect the adoption of this guidance to have a material impact on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In January 2017, the FASB issued ASU 2017-04, <i style="font-style:italic;">Intangibles-Goodwill and Other (Topic 350):</i> <i style="font-style:italic;">Simplifying the Test for Goodwill Impairment</i> (ASU 2017-04), which simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. Under the amendments in ASU 2017-04, an entity should recognize an impairment charge for the amount by which the carrying amount of a reporting unit exceeds its fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The updated guidance requires a prospective adoption. ASU 2017-04 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the timing and impact of adopting this new accounting standard on its condensed consolidated financial statements and related disclosures.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">In June 2016, the FASB issued ASU 2016-13, <i style="font-style:italic;">Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments</i>, which requires that expected credit losses relating to financial assets measured on an amortized cost basis and available-for-sale debt securities be recorded through an allowance for credit losses. ASU 2016-13 limits the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and also requires the reversal of previously recognized credit losses if fair value increases. In April 2019, the FASB issued ASU 2014-04, <i style="font-style:italic;">Codification Improvements to Topic 326 Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments</i>, which clarifies certain aspects of the accounting for credit losses, hedging activities and financial instruments. In May 2019, the FASB issued ASU 2019-05, <i style="font-style:italic;">Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief</i>, which provides transition relief for entities adopting the Board’s credit losses standard. Specifically, ASU 2019-05 amends ASU 2016-13 to allow companies to irrevocably elect, upon adoption of ASU 2016-13, the fair value option for financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of the credit losses guidance in Accounting Standards Codification (ASC) 326-20, (3) are eligible for the fair value option under ASC 825-10, and (4) are not held-to-maturity debt securities. The new standard will be effective on January 1, 2020. Early adoption is available. The Company is currently evaluating the effect that the updated standard will have on its condensed consolidated financial statements and related disclosures.</p> P12M 13800000 14000000.0 100000 0.21 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 3 – Investments in Marketable Securities</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The carrying amounts of cash equivalents and marketable securities approximate their fair value based upon quoted market prices. Certain of the Company’s financial instruments are not measured at fair value on a recurring basis, but are recorded at amounts that approximate their fair value due to their liquid or short-term nature, such as cash, accounts receivable, accounts payable, accrued expenses, lease liability-short term and deferred revenue-short term.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company uses the following three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs to value its financial instruments:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Level 1: Observable inputs such as unadjusted quoted prices in active markets for identical instruments.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Level 2: Quoted prices for similar instruments that are directly or indirectly observable in the marketplace.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Level 3: Significant unobservable inputs which are supported by little or no market activity and that are financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant judgment or estimation.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Investments in marketable securities consisted of the following:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><div 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style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div 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style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div 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style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:51.53%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Gross Unrealized </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Gross Unrealized </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.13%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Amortized Cost</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Gain </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Loss </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Short-term available-for-sale debt securities</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 43,279</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 52</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 43,331</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">Asset-backed securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 38,082</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 27</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 38,109</p></td></tr><tr><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">U.S. treasury securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 20,948</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 18</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 20,966</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">U.S. and foreign commercial paper</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 37,147</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.04%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.49%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 37,147</p></td></tr><tr><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Total</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 139,456</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 97</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 139,553</p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;border:0;"><tr><td style="vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">(1)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">Gross unrealized gain (loss) is pre-tax.</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:51.31%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, 2018</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross Unrealized</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross Unrealized</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.75%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.13%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Amortized Cost</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gain </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Loss </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Short-term available-for-sale debt securities</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,251</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (92)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,159</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Asset-backed securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,450</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (31)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,419</p></td></tr><tr><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. treasury securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,898</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (3)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,895</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign commercial paper</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.64%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td></tr><tr><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,735</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (126)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;margin-top:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;border:0;"><tr><td style="vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;"><sup style="font-size:7.5pt;vertical-align:top;">(1)</sup></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">Gross unrealized gain (loss) is pre-tax.</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The contractual term to maturity of short-term marketable securities held by the Company as of June 30, 2019 is less than one year. There were no long-term marketable securities held by the Company as of June 30, 2019.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Realized gains and losses for the three and six months ended June 30, 2019 and 2018 were not significant.</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">The following tables present the fair value of the Company’s financial assets measured at fair value on a recurring basis:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:49.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 1</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 2</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 3</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Money market fund</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Short-term investments</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 43,331</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 43,331</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Asset-backed securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 38,109</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 38,109</p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. treasury securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,966</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,966</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign commercial paper</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 37,147</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 37,147</p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total short-term investments</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 139,553</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 139,553</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total assets measured at fair value</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 139,553</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 169,635</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:49.81%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, 2018</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">($ in thousands)</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 1</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 2</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 3</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.68%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Cash equivalents:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Money market funds</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Total cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Short-term investments:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,159</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,159</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Asset-backed securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,419</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,419</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. treasury securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,895</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,895</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign commercial paper</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Total short-term investments</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total assets measured at fair value</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 215,954</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company estimates the fair value of its U.S. and foreign corporate debt securities, asset-backed securities, U.S. treasury securities  and U.S. and foreign commercial paper by taking into consideration valuations obtained from third-party pricing services. The pricing services utilize industry standard valuation models, including both income and market-based approaches, for which all significant inputs are observable, either directly or indirectly, to estimate fair value. These inputs include reported trades of and broker/dealer quotes on the same or similar securities, issuer credit spreads, benchmark securities, prepayment/default projections based on historical data, and other observable inputs.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">There were no transfers between Level 1, Level 2 or Level 3 during the periods presented.</p> <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Investments in marketable securities consisted of the following:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:51.53%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Gross Unrealized </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Gross Unrealized </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.13%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Amortized Cost</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Gain </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.66%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Loss </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Short-term available-for-sale debt securities</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 43,279</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 52</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 43,331</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">Asset-backed securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 38,082</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 27</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 38,109</p></td></tr><tr><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">U.S. treasury securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 20,948</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 18</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 20,966</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 6pt;">U.S. and foreign commercial paper</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 37,147</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.04%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.49%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 37,147</p></td></tr><tr><td style="vertical-align:bottom;width:46.63%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Total</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 139,456</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 97</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.05%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.04%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.49%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 139,553</p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;border:0;"><tr><td style="vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">(1)</p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">Gross unrealized gain (loss) is pre-tax.</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:51.31%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, 2018</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross Unrealized</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gross Unrealized</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:46.75%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.13%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Amortized Cost</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Gain </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.27%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Loss </b><sup style="font-size:6pt;font-weight:bold;vertical-align:top;">(1)</sup></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Short-term available-for-sale debt securities</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,251</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (92)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,159</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Asset-backed securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,450</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (31)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,419</p></td></tr><tr><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. treasury securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,898</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (3)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,895</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign commercial paper</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.64%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td></tr><tr><td style="vertical-align:bottom;width:46.75%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Total</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.59%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,735</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (126)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.64%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;margin-top:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;border:0;"><tr><td style="vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;"><sup style="font-size:7.5pt;vertical-align:top;">(1)</sup></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">Gross unrealized gain (loss) is pre-tax.</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p> 43279000 52000 0 43331000 38082000 27000 0 38109000 20948000 18000 0 20966000 37147000 0 0 37147000 139456000 97000 0 139553000 73251000 0 92000 73159000 28450000 0 31000 28419000 19898000 0 3000 19895000 55136000 0 0 55136000 176735000 0 126000 176609000 <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">The following tables present the fair value of the Company’s financial assets measured at fair value on a recurring basis:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:49.96%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 1</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 2</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 3</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Money market fund</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Short-term investments</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 43,331</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 43,331</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Asset-backed securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 38,109</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 38,109</p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. treasury securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,966</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 20,966</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign commercial paper</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 37,147</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 37,147</p></td></tr><tr><td style="vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total short-term investments</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 139,553</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 139,553</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total assets measured at fair value</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,082</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 139,553</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.35%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 169,635</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="11" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:49.81%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, 2018</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">($ in thousands)</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 1</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 2</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Level 3</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.68%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Fair Value</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Cash equivalents:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Money market funds</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Total cash equivalents</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Short-term investments:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign corporate debt securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,159</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 73,159</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Asset-backed securities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,419</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 28,419</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. treasury securities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,895</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,895</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">U.S. and foreign commercial paper</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55,136</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Total short-term investments</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td></tr><tr><td style="vertical-align:bottom;width:47.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total assets measured at fair value</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,345</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 176,609</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.22%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.33%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.48%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.2%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 215,954</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p> 30082000 0 0 30082000 30082000 0 0 30082000 0 43331000 0 43331000 0 38109000 0 38109000 0 20966000 0 20966000 0 37147000 0 37147000 0 139553000 0 139553000 30082000 139553000 0 169635000 39345000 0 0 39345000 39345000 0 0 39345000 0 73159000 0 73159000 0 28419000 0 28419000 0 19895000 0 19895000 0 55136000 0 55136000 0 176609000 0 176609000 39345000 176609000 0 215954000 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 4 - Property and Equipment, net</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Property and equipment consist of the following:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:15.91%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Useful life (Years)</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.66%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Computer hardware and software</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">3</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 194</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Lab equipment</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">3 to 5</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 215</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 407</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Office equipment</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">7</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 705</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 70</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Leasehold improvement</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">1 to 5</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,091</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 790</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total property and equipment</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,011</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,461</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Less: Accumulated depreciation and amortization</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (963)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1,057)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Construction in progress</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">N/A</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 153</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Property and equipment, net</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,048</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 557</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Depreciation expense was approximately $0.1 million and $0.3 million for the three and six months ended June 30, 2019, respectively and approximately $0.1 million and $0.3 million for the three and six months ended June 30, 2018, respectively and was recorded in both research and development expense and general and administrative expense in the unaudited condensed consolidated statements of operations and comprehensive loss.</p> <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Property and equipment consist of the following:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:15.91%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Useful life (Years)</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.66%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Computer hardware and software</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">3</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 194</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Lab equipment</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">3 to 5</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 215</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 407</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Office equipment</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">7</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 705</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 70</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Leasehold improvement</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">1 to 5</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,091</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 790</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total property and equipment</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,011</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,461</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Less: Accumulated depreciation and amortization</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (963)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1,057)</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Construction in progress</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">N/A</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.37%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.76%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 153</p></td></tr><tr><td style="vertical-align:bottom;width:56.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Property and equipment, net</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.37%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,048</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.76%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.77%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 557</p></td></tr></table> 0 194000 215000 407000 705000 70000 2091000 790000 3011000 1461000 963000 1057000 0 153000 2048000 557000 100000 300000 100000 300000 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 5 – Accrued Expenses</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Accrued expenses consist of the following:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.1%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Accrued expenses:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Accrued compensation</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,786</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,011</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Accrued clinical trial expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,809</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,561</p></td></tr><tr><td style="vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Accrued professional fees and other</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.81%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 990</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.98%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,107</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total accrued expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.81%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,585</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.98%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 9,679</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p> <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Accrued expenses consist of the following:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.1%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">December 31, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.1%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Accrued expenses:</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Accrued compensation</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,786</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,011</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Accrued clinical trial expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.81%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,809</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.98%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,561</p></td></tr><tr><td style="vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Accrued professional fees and other</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.81%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 990</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.98%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,107</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:74.23%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total accrued expenses</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.28%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.81%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,585</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.98%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 9,679</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p> 2786000 5011000 3809000 3561000 990000 1107000 7585000 9679000 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 6 – Stock Plans and Stock-Based Compensation</p><p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Equity Incentive Plans</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In May 2018, the Company’s stockholders approved the Assembly Biosciences, Inc. 2018 Stock Incentive Plan (the 2018 Plan) pursuant to which the Company reserved 1,900,000 shares of its common stock for issuance in connection with equity incentive awards, and in May 2019, the Company’s stockholders approved Amendment No. 1 (the Amendment) to the 2018 Plan to increase the number of shares reserved for issuance thereunder from 1,900,000 shares of common stock to 3,000,000. In May 2018, the Company’s stockholders also approved the Assembly Biosciences, Inc. Employee Stock Purchase Plan (the 2018 ESPP), pursuant to which eligible employees can purchase an aggregate of up to 400,000 shares of the Company’s common stock at the end of predetermined offering periods at 85% of the lower of the fair market value at the beginning or end of the offering period.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">As of June 30, 2019, the Company had awards outstanding under the following shareholder approved plans:</p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:18pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">2010 Equity Incentive Plan (the 2010 Plan), which has been frozen;</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:18pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">the Amended and Restated 2014 Stock Incentive Plan (the 2014 Plan); and</span></td></tr></table><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:18pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">the 2018 Plan.</span></td></tr></table><div style="margin-top:12pt;"/><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Shares of common stock underlying awards that are forfeited under the 2010 Plan on or after June 2, 2016 will become available for issuance under the 2014 Plan. As of June 30, 2019, the Company also had awards outstanding under the Assembly Biosciences, Inc. 2017 Inducement Award Plan (the 2017 Plan).</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company issues new shares of common stock to settle options exercised and upon settlement of vested RSUs. The Company also issues new shares of common stock in connection with purchases of shares of common stock by eligible employees under the Company’s 2018 ESPP.</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:bold;margin:0pt 0pt 10pt 0pt;"><b style="font-style:normal;font-weight:bold;">Stock Plan Activity</b></p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 10pt 0pt;">Stock Options</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">A summary of the Company’s option activity and related information for the six-month period ended June 30, 2019 is as follows:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted Average</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total Intrinsic</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Exercise Price</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Value (in</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Number of Shares</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Per Share</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">thousands)</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of December 31, 2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,637,145</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 17.21</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 48,179</p></td></tr><tr><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 826,350</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 18.40</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Exercised</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (50,875)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6.51</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 655</p></td></tr><tr><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (208,685)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 45.81</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 117</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of June 30, 2019</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,203,935</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 16.36</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,511</p></td></tr><tr><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Options vested and exercisable</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,482,129</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 12.58</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 18,398</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 10pt 0pt;">Restricted Stock Units (RSU)</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">A summary of the Company’s RSUs and related information for the six-month period ended June 30, 2019 is as follows:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;width:1.4%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.45%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.45%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">average</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Number of RSUs</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.45%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">grant price</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of December 31, 2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 568,005</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 37.18</p></td></tr><tr><td style="vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 235,928</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19.34</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Vested and settled</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (63,920)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 46.03</p></td></tr><tr><td style="vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (121,822)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 24.14</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of June 30, 2019</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 618,191</p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><sup style="font-size:7.5pt;vertical-align:top;">(1)  </sup></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 32.03</p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;margin-top:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;border:0;"><tr><td style="vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;"><sup style="font-size:7.5pt;vertical-align:top;">(1)</sup></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;text-align:justify;">Includes 128,334 RSUs that have vested but are subject to deferred settlement.</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">As of June 30, 2019, RSUs outstanding include 45,000 RSUs granted in December 2017 with performance-based conditions to an executive of the Company. The 45,000 RSUs with a grant date fair value of $1.9 million vest upon the performance conditions not yet deemed probable and accordingly, no compensation expense has been recognized as of June 30, 2019 for these awards. In the second quarter of 2019, 100,000 RSU’s granted to a former officer were forfeited due to his departure. The RSU’s had a grant date fair value of $2.4 million and were vesting over time but would have accelerated upon the achievement of certain performance conditions. The Company reversed the previously recognized expense of $0.4 million related to these forfeited awards upon the departure of the former officer.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">As of June 30, 2019, the Company had unrecognized stock-based compensation expense related to all unvested RSUs of $9.7 million, which is expected to be recognized over the remaining weighted average amortization period of 1.8 years.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">In May 2019 employees purchased 36,804 shares of common stock under the 2018 ESPP.</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:bold;margin:0pt 0pt 10pt 0pt;"><b style="font-style:normal;font-weight:bold;">Valuation Assumptions</b></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The fair value of the stock options granted or modified during the periods indicated was estimated using the Black-Scholes option pricing model, based on the following assumptions:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:27.75%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Three Months Ended June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:27.75%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Exercise price</p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$15.22 - $57.33</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$41.36 - $46.75</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$15.22 - $57.33</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$41.36 - $57.53</p></td></tr><tr><td style="vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Expected volatility</p></td><td style="vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">66.2% - 83.0%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">75.7% - 85.5%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">66.2% - 83.2%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">76.7% - 86.1%</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Risk-free rate</p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.17% - 2.47%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.56% - 2.93%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.17% - 2.65%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.56% - 2.93%</p></td></tr><tr><td style="vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Expected term (years)</p></td><td style="vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.0 - 9.0</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.5 - 7.0</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.0 - 9.0</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.5 - 7.0</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Dividend yield</p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="font-size:9pt;margin-bottom:10pt;visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">The fair value of RSUs granted is determined based on the price of the Company’s common stock on the date of grant.</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;font-weight:bold;margin:0pt 0pt 9pt 0pt;"><b style="font-style:normal;font-weight:bold;">Stock-Based Compensation Expense</b></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The following table summarizes the components of total stock-based compensation expense included in the condensed consolidated statements of operations and comprehensive loss:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:27.14%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:24.64%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Research and development</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,116</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="vertical-align:top;visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,689</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,845</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,214</p></td></tr><tr><td style="vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">General and administrative</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1,048)</p></td><td style="vertical-align:top;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><sup style="font-size:7.5pt;vertical-align:top;">(1)</sup></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,900</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,800</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 9,458</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total stock-based compensation expense</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,068</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 11,589</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 8,645</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,672</p></td></tr></table><div style="font-family:'Times New Roman';font-size:10.0pt;margin-bottom:0pt;margin-top:0pt;min-height:1.19em;position:relative;width:100%;"><div style="background-color:#000000;height:1pt;position:relative;top:0.6em;width:25.0%;border:none;margin:0 auto 0 0;"/></div><table style="border-collapse:collapse;border:0;"><tr><td style="vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;"><sup style="font-size:7.5pt;vertical-align:top;">(1)</sup></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;">Includes the reversal of previously recognized expense of $3.6 million related to forfeited awards resulting from the departure of one of our former officers during the period.</p></td></tr></table> 1900000 1900000 3000000 400000 0.85 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">A summary of the Company’s option activity and related information for the six-month period ended June 30, 2019 is as follows:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted Average</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Total Intrinsic</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Exercise Price</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Value (in</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Number of Shares</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Per Share</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">thousands)</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of December 31, 2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 4,637,145</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 17.21</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 48,179</p></td></tr><tr><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 826,350</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 18.40</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Exercised</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (50,875)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6.51</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 655</p></td></tr><tr><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (208,685)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 45.81</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 117</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of June 30, 2019</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,203,935</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 16.36</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.22%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19,511</p></td></tr><tr><td style="vertical-align:bottom;width:58.95%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Options vested and exercisable</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12.82%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,482,129</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:11.48%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 12.58</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.22%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.99%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 18,398</p></td></tr></table> 4637145 17.21 48179000 826350 18.40 0 50875 6.51 655000 208685 45.81 117000 5203935 16.36 19511000 3482129 12.58 18398000 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">A summary of the Company’s RSUs and related information for the six-month period ended June 30, 2019 is as follows:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;width:1.4%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.45%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Weighted</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.45%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">average</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Number of RSUs</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:10.45%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">grant price</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of December 31, 2018</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 568,005</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 37.18</p></td></tr><tr><td style="vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Granted</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 235,928</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 19.34</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Vested and settled</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (63,920)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 46.03</p></td></tr><tr><td style="vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Forfeited</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (121,822)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 24.14</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:73.02%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Outstanding as of June 30, 2019</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:12%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 618,191</p></td><td style="background-color:#cceeff;vertical-align:top;white-space:nowrap;width:2.25%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><sup style="font-size:7.5pt;vertical-align:top;">(1)  </sup></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.4%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 32.03</p></td></tr></table> 568005 37.18 235928 19.34 63920 46.03 121822 24.14 618191 32.03 128334 45000 45000 1900000 0 100000 2400000 -400000 9700000 P1Y9M18D 36804 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The fair value of the stock options granted or modified during the periods indicated was estimated using the Black-Scholes option pricing model, based on the following assumptions:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:9pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:27.75%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Three Months Ended June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="3" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:27.75%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt 0pt 0.05pt 0pt;">    </p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:13.05%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Exercise price</p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$15.22 - $57.33</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$41.36 - $46.75</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$15.22 - $57.33</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">$41.36 - $57.53</p></td></tr><tr><td style="vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Expected volatility</p></td><td style="vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">66.2% - 83.0%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">75.7% - 85.5%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">66.2% - 83.2%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">76.7% - 86.1%</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Risk-free rate</p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.17% - 2.47%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.56% - 2.93%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.17% - 2.65%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2.56% - 2.93%</p></td></tr><tr><td style="vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Expected term (years)</p></td><td style="vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.0 - 9.0</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.5 - 7.0</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.0 - 9.0</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">5.5 - 7.0</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:41.19%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">Dividend yield</p></td><td style="background-color:#cceeff;vertical-align:bottom;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:13.05%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">0%</p></td></tr></table> 15.22 57.33 41.36 46.75 15.22 57.33 41.36 57.53 0.662 0.830 0.757 0.855 0.662 0.832 0.767 0.861 0.0217 0.0247 0.0256 0.0293 0.0217 0.0265 0.0256 0.0293 P5Y P9Y P5Y6M P7Y P5Y P9Y 0 0 0 0 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The following table summarizes the components of total stock-based compensation expense included in the condensed consolidated statements of operations and comprehensive loss:</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:27.14%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:24.64%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.24%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:12.23%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:11.12%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Research and development</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,116</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="vertical-align:top;visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,689</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 5,845</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 6,214</p></td></tr><tr><td style="vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">General and administrative</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (1,048)</p></td><td style="vertical-align:top;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><sup style="font-size:7.5pt;vertical-align:top;">(1)</sup></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.67%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 7,900</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,800</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 9,458</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:44.08%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total stock-based compensation expense</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,068</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.66%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.67%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.56%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 11,589</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 8,645</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:9.58%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,672</p></td></tr></table> 3116000 3689000 5845000 6214000 -1048000 7900000 2800000 9458000 2068000 11589000 8645000 15672000 -3600000 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 7 - Collaboration Agreement</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 10pt 0pt;">Allergan</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">In January 2017, the Company entered into the Collaboration Agreement with Allergan to develop and commercialize select microbiome gastrointestinal disease therapies. Pursuant to the Collaboration Agreement, the Company granted Allergan an exclusive worldwide license to certain of its intellectual property, including its intellectual property arising under the Collaboration Agreement, to develop and commercialize licensed compounds for UC, Crohn’s disease, and two compounds for IBS. Allergan and the Company also agreed to collaborate on research and development activities with respect to the licensed compounds in accordance with a mutually agreed upon research and development plan. Per the terms of the Collaboration Agreement, Allergan can select backups and additional target indications to add to the licenses granted for additional consideration and also has the ability to enter into a contract manufacturing agreement with the Company for compound supply at cost plus an agreed upon margin. In addition, the Company will participate on a Joint Development Committee (JDC) and Joint Patent Committee (JPC). The Company provided to Allergan standard indemnification and protection of licensed intellectual property, which is part of assurance that the license meets the contract’s specifications and is not an obligation to provide goods or services.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Allergan paid the Company an upfront non-refundable payment of $50.0 million, which was received in 2017. Additionally, the Company is eligible to receive variable consideration in the form of research and development cost reimbursements, up to approximately $631.0 million related to seven development milestones and up to approximately $2.14 billion related to 12 commercial development and sales milestones in connection with the successful development and commercialization of licensed compounds. In addition, the Company is eligible to receive tiered royalties at rates ranging from the mid-single digits to the mid-teens based on net sales.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Allergan and the Company have agreed to share research and development costs up to an aggregate of $75.0 million through proof-of-concept (POC) studies on a ⅔, ⅓ basis, respectively, and Allergan has agreed to assume all post-POC development costs. In the event any pre-POC development costs exceed $75.0 million in the aggregate, the Company may elect either (a) to fund ⅓ of such costs in excess of $75.0 million or (b) to allow Allergan to deduct from future development milestone payments ⅓ of the development costs funded by Allergan in excess of $75.0 million plus a premium of 25%. The Company has an option to co-promote the licensed programs in the U.S. and China, subject to certain conditions set forth in the Collaboration Agreement.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Allergan may terminate the Collaboration Agreement at any time upon 120 days’ advance written notice to the Company. Unless terminated early, the Collaboration Agreement has a term that ends on the earlier of the (i) the period when POC studies have been completed and no further licensed compounds or licensed products are in development, and (ii) expiration of the last to exist valid claim covering the manufacture, use and sale of the licensed products. The Collaboration Agreement also contains customary provisions for termination by either party, including in the event of breach of the Collaboration Agreement, subject to cure. Upon termination for convenience, the licenses granted by the Company and its know-how all revert to the Company.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company concluded that Allergan is a customer and that the Collaboration Agreement is not subject to accounting literature on collaborative arrangements. This is because the Company granted to Allergan licenses to its intellectual property, and research and development services, all of which are outputs of the Company’s ongoing activities, in exchange for consideration. The Company identified the following material promises under the Collaboration Agreement: (1) transfer of a licenses to intellectual property for the four initial indications, inclusive of the related technology know-how (Licenses) and (2) the obligation to perform research development services through POC (Development Services). The Company’s participation on the JDC and JPC were considered to be immaterial in the context of the contract. The Company’s co-promotion option was not considered to be a performance obligation. Allergan’s selection of backups or additional target indications to add to the licenses granted for additional consideration and ability to enter into a contract manufacturing agreement with the Company for compound supply at cost plus an agreed upon margin were not considered to be performance obligations as the Company concluded the options were not offered at a discount that exceeds discounts available to other customers, and therefore were not material rights. The grant of additional licensing rights upon option exercises and contract manufacturing agreements will be accounted for as separate contracts when they occur.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company concluded the Licenses each were considered to be functional as they have significant standalone functionality and were capable of being distinct. However, the Company determined that each of the Licenses individually were not distinct from the Development Services within the context of the agreement. This is because Allergan is dependent on the Company to execute the Development Services, that it is only uniquely able to perform, in order for Allergan to benefit from the Licenses. As such, the Company determined that it has four performance obligations under the Collaboration Agreement associated with the transfer of the four compound Licenses combined with the performance of the Development Services for each of the four compound indications. The Company determined that the four performance obligations will be performed over the duration of the contract, which began in February 2017 and ends upon completion of the Development Services. We originally estimated the completion of the Development Services to be in 2024. During the second quarter of 2019, the completion of the Development Services was extended to 2025 based on updated estimates of effort associated with our and Allergan’s development plans. This change in estimate did not have a material impact on our revenue recognition. The Company is using a cost-based input method to measure proportional performance and to calculate the corresponding amount of revenue to recognize. The Company believes this is the best measure of progress because other measures do not reflect how the Company transfers its performance obligation to Allergan. In applying the cost-based input method of revenue recognition, the Company measures costs incurred relative to budgeted costs to fulfill the four performance obligations. These costs consist primarily of third-party contract costs and internal labor costs. Revenue will be recognized based on actual costs incurred as a percentage of total budgeted costs as the Company completes its performance obligations.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">To allocate transaction price among the four performance obligations, the Company estimated their standalone selling price (SSP) using income-based valuation approach for the estimated value a licensor of the compounds would receive </p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">considering the stage of the compounds’ development. The Company believes that a change in the assumptions used to determine its best estimate of selling price for the four performance obligations would not have a significant effect on the allocation of consideration received to the four performance obligations.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The transaction price at the inception of the agreement and upon adoption of ASC 606 was limited to $50.0 million upfront payment. Of this amount, the Company allocated $12.5 million to each of the four performance obligations. Research and development cost reimbursement payments are included in the transaction price in the reporting period that the Company concludes that it is probable that recording revenue in the period will not result in a significant reversal in amounts recognized in future periods. The variable consideration related to the remaining development and commercialization milestone payments has not been included in the transaction price as these were fully constrained at June 30, 2019. As part of the Company’s evaluation of the development and commercialization milestones constraint, the Company determined that the achievement of such milestones is contingent upon success in future clinical trials and regulatory approvals which are not within its control and uncertain at this stage. Any variable consideration related to sales-based milestones (including royalties) will be recognized when the related sales occur as they were determined to relate predominantly to the license granted to Allergan. The Company will re-evaluate the transaction price in each reporting period and as uncertain events are resolved or other changes in circumstances occur.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">The Company did not incur any significant incremental costs of obtaining the Allergan contract.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">For the six months ended June 30, 2019 and 2018, the Company recognized approximately $7.0 million and $6.8 million, respectively, in revenue associated with the Collaboration Agreement. Short-term and long-term deferred revenue contract liabilities related to the Collaboration Agreement were approximately $6.1 million and approximately $33.6 million at June 30, 2019 and approximately $5.1 million and approximately $35.6 million at December 31, 2018.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">On the unaudited condensed consolidated balance sheets, contract asset balances of approximately $2.9 million and approximately $2.4 million were recorded as accounts receivable from collaboration as of June 30, 2019 and December 31, 2018, respectively.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The following table presents changes in the Company’s contract liabilities ($ in thousands):</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Beginning</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">of Period</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Additions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Deductions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">End of Period</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, 2019</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Contract liabilities:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 12pt;">Deferred revenue</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 40,660</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (996)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,664</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Beginning</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">of Period</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Additions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Deductions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">End of Period</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, 2018</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Contract liabilities:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 12pt;">Deferred revenue</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 45,785</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2,195)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 43,590</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:21.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:19.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.9%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Collaboration revenue recognized in the period from:</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Amounts included in deferred revenue at the beginning of the period</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 137</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 893</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 996</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,195</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Performance obligations satisfied in previous period</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p> 50000000.0 631000000.0 7 2140000000 12 75000000.0 12500000 7000000.0 6800000 6100000 33600000 5100000 35600000 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The following table presents changes in the Company’s contract liabilities ($ in thousands):</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Beginning</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">of Period</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Additions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Deductions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">End of Period</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, 2019</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Contract liabilities:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 12pt;">Deferred revenue</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 40,660</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (996)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 39,664</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Beginning</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Balance at</b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">of Period</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Additions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Deductions</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.83%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">End of Period</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, 2018</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Contract liabilities:</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:52.07%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 12pt;">Deferred revenue</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 45,785</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2,195)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 43,590</p></td></tr></table> 40660000 0 996000 39664000 45785000 0 2195000 43590000 <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:21.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended June 30, </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td colspan="5" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:19.7%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended June 30, </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.79%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:9.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.9%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;">    </p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:8.87%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">2018</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Collaboration revenue recognized in the period from:</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Amounts included in deferred revenue at the beginning of the period</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 137</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 893</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 996</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,195</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:55.27%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Performance obligations satisfied in previous period</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.38%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.14%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.35%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:8.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.64%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.24%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p> 137000 893000 996000 2195000 0 0 0 0 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 8 - Milestones and Research Agreements</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 9pt 0pt;">HBV Research Agreement with Indiana University</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">Since September 2013, the Company has been party to an exclusive License Agreement dated September 3, 2013 with Indiana University Research and Technology Corporation (IURTC) from whom it has licensed aspects of the Company’s HBV program held by IURTC. The license agreement requires the Company to make milestone payments based upon the successful accomplishment of clinical and regulatory milestones. The aggregate amount of all performance milestone payments under the IURTC license agreement, should all milestones through development be met, is approximately $0.8 million, with a portion related to the first performance milestone having been paid. The Company also is obligated to pay IURTC royalty payments based on net sales of the licensed technology. The Company is also obligated to pay diligence maintenance fees each year to the extent that the royalty, sublicensing, and milestone payments to IURTC are less than the diligence maintenance fee for that year. Amounts paid in the six months ended June 30, 2019 and 2018 were insignificant.</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 9pt 0pt;">Microbiome Targeted Colonic Delivery Platform</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">In November 2013, the Company entered into a License and Collaboration Agreement with Therabiome, LLC (Therabiome), for all intellectual property and know-how owned or controlled by Therabiome relating to the oral delivery of pharmaceutical drugs to specific sites in the intestine, using a pH sensitive controlled release capsule-in-capsule technology. The Company will be solely responsible for all research and development activities with respect to any product it develops under the license.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">The Company must pay Therabiome clinical and regulatory milestones for each product or therapy advanced from the platform for U.S. regulatory milestones. The Company also must pay Therabiome lesser amounts for foreign regulatory milestones, which vary by country and region. The Company also must pay Therabiome royalties on annual net sales of a product in the low to mid-single digit percentages plus, once annual net sales exceed certain thresholds, a one-time cash payment upon reaching the thresholds.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">Therabiome must pay the Company royalties on annual net sales of any product Therabiome is permitted to develop using the intellectual property in the low double to mid-double-digit percentages, depending on the level of development or involvement the Company had in the product.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">Two regulatory milestones were determined to have occurred under this agreement, and approximately $0.3  million was accrued and included in accrued expenses as of and during the six months ended June 30, 2019. No amounts were accrued for this agreement as of and for the six months ended June 30, 2018.</p> 800000 2 300000 0 <p style="font-family:'Times New Roman';font-size:10pt;font-weight:bold;margin:0pt 0pt 10pt 0pt;">Note 9 - Leases</p><p style="font-family:'Times New Roman';font-size:10pt;font-style:italic;margin:0pt 0pt 9pt 0pt;">Operating Leases</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 9pt 0pt;">The Company leases office space for corporate and administrative functions in Carmel, Indiana under a lease agreement that expires in August 2023. The Company leases office and laboratory space in South San Francisco, California under a sub-sublease that expires in December 2023. Prior to moving into the South San Francisco office and laboratory space in February 2019, the Company leased office and laboratory space in San Francisco, California, under a sublease that expired on February 28, 2019. The Company also leases office and laboratory space in Groton, Connecticut under a lease that expires in March 2020. The Company’s China subsidiary leases office space in Shanghai that expires in May 2020 and rents lab space in Shanghai under a lease agreement that expires in December 2019. Additionally, the Company’s China subsidiary leases office space in Beijing under a lease agreement that expires in December 2019. Certain lease contracts contain renewal clauses that the Company assesses on a case by case basis. The Company also leases certain laboratory equipment accounted for as operating leases. These equipment leases began to expire in 2017, with the final lease expiring in 2021.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">When the Company cannot determine the implicit rate in its leasing arrangements the Company uses its incremental borrowing rate as the discount rate when measuring operating lease liabilities. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of a lease within a particular currency environment.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">At June 30, 2019, the Company had operating lease liabilities of $12.9 million and right-of-use assets of $12.7 million, which were included in the condensed consolidated balance sheet.</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The following summarizes quantitative information about the Company’s operating leases:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.78%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Lease cost</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Operating lease cost</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,117</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,208</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Short-term lease cost</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 112</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 433</p></td></tr><tr><td style="vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Variable lease cost</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 300</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 599</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total lease cost</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,529</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,240</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:16.93%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Cash paid for amounts included in the measurement of lease liabilities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,062</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,099</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td></tr><tr><td style="vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Right-of-use assets exchanged for new operating lease liabilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 400</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 400</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">As of June 30, 2019, the weighted-average remaining lease term for operating leases was approximately 4.2 years and the weighted-average discount rate for operating leases was approximately 9.6%.</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">As of June 30, 2019, the maturities of the Company’s operating lease liabilities were as follows (in thousands):</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2019 (from July to December)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">    </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,999</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2020</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,881</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,396</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2022</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,267</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2023</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,303</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total undiscounted future minimum lease payments</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,846</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Less: present value adjustment</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2,957)</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Operating lease liabilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 12,889</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt 0pt 10pt 0pt;">Operating lease costs were approximately $1.1 million and $2.2 million, for the three and six months ended June 30, 2019, respectively and $0.7 million and $1.5 million for the three and six months ended June 30, 2018,  respectively.</p> 12900000 12700000 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">The following summarizes quantitative information about the Company’s operating leases:</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.78%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.78%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Lease cost</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">  </p></td></tr><tr><td style="vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Operating lease cost</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,117</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,208</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Short-term lease cost</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 112</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 433</p></td></tr><tr><td style="vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Variable lease cost</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.86%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.92%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 300</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 599</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.82%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total lease cost</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.86%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.92%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,529</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,240</p></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:16.93%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:center;margin:0pt;"><span style="font-size:8pt;visibility:hidden;">​</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.77%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Three Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><b style="font-weight:bold;">    </b></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Six Months Ended </b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td></tr><tr><td style="background-color:auto;vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">($ in thousands)</span></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:18.77%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td><td colspan="2" style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:16.26%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">June 30, 2019</b></p></td><td style="background-color:auto;vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;">​</span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Cash paid for amounts included in the measurement of lease liabilities</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:16.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,062</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 2,099</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td></tr><tr><td style="vertical-align:bottom;width:60.32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Right-of-use assets exchanged for new operating lease liabilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.84%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.93%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 400</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:14.65%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 400</p></td><td style="vertical-align:bottom;white-space:nowrap;width:0.51%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td></tr></table> 1117000 2208000 112000 433000 300000 599000 1529000 3240000 1062000 2099000 400000 400000 P4Y2M12D 0.096 <p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;">As of June 30, 2019, the maturities of the Company’s operating lease liabilities were as follows (in thousands):</p><p style="font-family:'Times New Roman';font-size:10pt;text-align:justify;margin:0pt;"><span style="margin-bottom:10pt;visibility:hidden;">​</span></p><table style="border-collapse:collapse;font-size:16pt;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:80%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">​</span></p></div></div></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2019 (from July to December)</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">    </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,999</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2020</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,881</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2021</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,396</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2022</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,267</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">2023</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 3,303</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Total undiscounted future minimum lease payments</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,846</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Less: present value adjustment</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt;"> (2,957)</p></td></tr><tr><td style="vertical-align:bottom;width:84.97%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">Operating lease liabilities</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.7%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;">​</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.69%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:10.62%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 12,889</p></td></tr></table> 1999000 3881000 3396000 3267000 3303000 15846000 2957000 12889000 1100000 2200000 700000 1500000