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Monthly Sublease Base Rent Monthly sublease base rent Vebicorvir Vebicorvir [Member] Vebicorvir. 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Other Risks And Uncertainties Policy [Text Block] Other Risks and Uncertainties Statement of Financial Position [Abstract] Restricted Stock Units (RSUs) [Member] RSUs Unvested RSUs Antidilutive Security, Excluded EPS Calculation [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive loss Warrants expiration date Warrants and Rights Outstanding, Maturity Date Warrant Expiration Date Liabilities Total liabilities Financial Instruments [Domain] Financial Instruments Restructuring costs reversal Restructuring Costs Reversal of stock-based compensation expense Restructuring costs reversal of stock-based compensation expense Cash equivalents at fair value. Cash Equivalents At Fair Value [Abstract] Cash equivalents Weighted Average Number of Shares Outstanding, Diluted Weighted average common shares outstanding, diluted Weighted Average Number of Shares Outstanding, Diluted, Total Weighted average common shares outstanding - diluted Securities Act File Number Entity File Number OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Unrealized loss on marketable debt securities Unrealized loss on marketable debt securities Unrealized loss on marketable securities Cover [Abstract] Lessee, operating lease, lease not yet commenced, future lease payments Lessee, Operating Lease, Lease Not yet Commenced, Payments Due Lessee, operating lease, lease not yet commenced, payments due. Less: Segment Reporting Information, Profit (Loss) [Abstract] Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets US Treasury Securities [Member] U.S. treasury securities Number of Operating Segments Operating segments (in segments) Number of operating segment Sale of Stock [Domain] Sale of Stock Segment Reporting Disclosure [Text Block] Segment Reporting Schedule of accrued restructuring charges. Schedule Of Accrued Restructuring Charges [Table TextBlock] Schedule of Accrued Restructuring Charges General and Administrative Expense General and administrative General and Administrative Expense, Total Collaboration revenue from a related party recognized in the period from: Collaboration Revenue Recognized from Related Party in Period [Abstract] Collaboration Revenue Recognized from Related Party in Period. Milestones and Research Agreements Milestones And Research Agreements [Abstract] Collaboration revenue Revenue recognized Collaboration revenue from a related party Research and Development Arrangement, Contract to Perform for Others [Line Items] Research And Development Arrangement Contract To Perform For Others [Line Items] Milestone and Research Agreements: Purchase Commitment, Remaining Minimum Amount Committed Potential milestone payment Restructuring Charges, Total Restructuring Charges Costs incurred Restructuring charges Fair value assets between levels transfers amount. Fair Value Assets Between Levels Transfers Amount Fair value assets transfers between level 1, level 2 or level 3 Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share Contract with Customer, Liability, Current Deferred revenue - short-term Deferred revenue from a related party The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Amount Total fair value of awards Deferred Compensation Liability [Abstract] Variable Consideration for Reimbursable Costs Variable consideration for reimbursable costs. 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Net accretion of investments in marketable debt securities August 11 2025 Two Warrants August Eleven Two Zero Two Five Warrants Two[Member] August Eleven Two Zero Two Five Warrants Two Issuance of common stock for settlement of restricted stock units (RSUs) (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total Maximum [Member] Maximum Statistical Measurement [Axis] Statistical Measurement Contract with Customer, Liability, Noncurrent Deferred revenue - long-term Deferred revenue from a related party - long-term Common Stock, Value, Issued Common stock, $0.001 par value; 150,000,000 shares authorized as of March 31, 2026 and December 31, 2025; 15,892,353 and 15,855,329 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Preferred Stock, Shares Authorized Preferred stock, shares authorized Proceeds received in collaboration agreement Proceeds from Collaborators Aggregate Non-dilutive Capital Aaggregate non-dilutive capital Aggregate non-dilutive capital Related Party Transaction [Line Items] Employee Stock [Member] ESPP Entity Registrant Name Entity Registrant Name Accounts Receivable, Purchase Accounts receivable from collaboration Income Tax Expense (Benefit) Income tax expense Income tax expense Measurement Frequency Measurement Frequency [Axis] Proceeds from Issuance of Common Stock Proceeds from the issuance of common stock under ATM equity offering program, net of issuance costs Accounts Receivable Collaboration From Related Party Accounts receivable collaboration from related party. Accounts receivable from related party Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Payments for Restructuring Reductions for cash payments Payments to Acquire Property, Plant, and Equipment, Total Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment A B I One One Seven Nine [Member] ABI-1179. 1179 Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Granted Represent non cash rent expense. Noncash Rent Expense Non-cash rent expense Common stock subject to purchase under employee stock purchase program. Common Stock Subject To Purchase Under Employee Stock Purchase Program [Member] Common stock subject to purchase under ESPP Assets Total assets Income Statement [Abstract] Restructuring Cost [Table] Sale of Stock, Number of Shares Issued in Transaction Number of shares sold Stock Issued During Period, Shares, New Issues Issuance of common stock under at-the-market (ATM) equity offering program, net of issuance costs (in shares) Earnings Per Share, Diluted Net loss per share, diluted Net loss per share - diluted Earnings Per Share, Diluted, Total Schedule of Segment Expenses and Other Segment Items Schedule of Segment Reporting Information, by Segment [Table Text Block] City Area Code City Area Code Cash and cash equivalent gross unrealized gain. Cash And Cash Equivalent Gross Unrealized Gain Gross Unrealized Gain Potential proceeds from collaboration extension fees Potential Proceeds from Collaboration Extension Fees Potential proceeds from collaboration extension fees. Collaborative and License Arrangement Disclosure. Collaborative And License Arrangement Disclosure [Text Block] Collaboration Agreement Counterparty Name [Domain] June Sixteen Two Zero Two Four Warrants [Member] June Sixteen Two Zero Two Four Warrants [Member] June 16 2024 warrants Segment Reporting Information [Line Items] Property, Plant and Equipment, Net Property and equipment, net Property, Plant and Equipment, Net, Total Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of common stock for settlement of restricted stock units (RSUs) Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total Option, License and Collaboration Agreement Option, License and Collaboration Agreement [Member] Option, license and collaboration agreement. Gilead Collaboration Agreement Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash and cash equivalents at the end of the period Cash and cash equivalents at the beginning of the period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Operating Income (Loss) Loss from operations Retained Earnings [Member] Accumulated Deficit Cash and Cash Equivalents [Axis] Cash and Cash Equivalents Class of Warrant or Right Exercised Class of warrant or right exercised. Warrant exercised Share-Based Payment Arrangement, Noncash Expense Stock-based compensation Share-Based Payment Arrangement, Noncash Expense, Total The value of common stock authorized to issue in a public offering. Initial Public Offering Value Of Shares Authorized Initial public offering value of shares authorized Available for sale debt securities accumulated gross unrealized loss before tax current. Available for Sale Debt Securities Accumulated Gross Unrealized Loss before Tax Current Gross Unrealized Loss, Short-term marketable securities Operating Lease, Liability, Noncurrent Operating lease liabilities - long-term Fair Value, Inputs, Level 1 [Member] Level 1 Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by financing activities Warrant Expiration Term Warrant expiration term. Warrant expiration term Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Summary of Warrants and Pre-funded Warrants to Purchase Shares of Common Stock Issued and Outstanding Nonoperating Income (Expense) [Abstract] Other income Accrued interest receivable Accured Interest Receivable Accured Interest Receivable Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Corporate Debt Securities [Member] Corporate debt securities Debt Securities, Available-for-Sale [Table] Entity Interactive Data Current Entity Interactive Data Current Research and Development, Contract to Perform for Others [Table] Schedule Of Research And Development Arrangement Contract To Perform For Others [Table] Increase (Decrease) in Contract with Customer, Liability Deferred revenue from a related party Statement of Income Location, Balance [Domain] Income Statement Location Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities Entity Tax Identification Number Entity Tax Identification Number Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Proceeds from maturities of marketable securities Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Nature of Business Interest Income, Other Interest and other income, net Interest and other income, net Local Phone Number Local Phone Number Related Party Transaction [Domain] Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Restructuring and related cost incurred cost benefit Restructuring And Related Cost Incurred Cost Benefit Restructuring charges Restructuring costs incurred Accounting Policies [Abstract] Contract with Customer, Performance Obligation Satisfied in Previous Period Performance obligations satisfied in previous period Revenue from Contract with Customer, Excluding Assessed Tax Revenue recognized Net Income (Loss) Attributable to Parent [Abstract] Numerator: Lease expiration month and year Lease Expiration, Month And Year Lease expiration, month and year. Commercial Paper [Member] Commercial paper Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unrecognized stock-based compensation expense expected to be recognized, term Accrued Professional Fees, Current Accrued professional fees and other Cash, Cash Equivalents, and Short-Term Investments Cash, Cash Equivalents, and Short-Term Investments, Total Cash, cash equivalents and marketable securities Employee and Contractor Related Expenses Employee and contractor-related expenses. Employee and contractor-related expenses Employee and Contractor Related Expenses, Total Entity Emerging Growth Company Entity Emerging Growth Company