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Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Title Trading Arrangement, Individual Title Increase in annual rent percentage Annual Rent Increase, Percent Annual Rent Increase, Percent Statement [Table] Statement [Table] Measurement Frequency [Domain] Measurement Frequency [Domain] Counterparty Name [Axis] Counterparty Name [Axis] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] City Area Code City Area Code Transaction costs incurred Asset Acquisition, Consideration Transferred, Transaction Cost Current liabilities: Liabilities, Current [Abstract] Equity Incentive Plan, 2017 Equity Incentive Plan, 2017 [Member] Equity Incentive Plan, 2017 [Member] Liability related to sale of future royalties Advance Future Royalties, Liability, Noncurrent Advance Future Royalties, Liability, Noncurrent Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Cash payment Payments to Acquire Productive Assets Quoted Market Prices for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Total current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Capital shares reserved for future issuance, increase (in shares) Common Stock, Capital Shares Reserved For Future Issuance, Increase Common Stock, Capital Shares Reserved For Future Issuance, Increase Repurchase and retirements of common stock Payments for Repurchase of Common Stock Shares subject to options, exercisable, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Liabilities Related To Sale Of Future Royalties [Roll Forward] Liabilities Related To Sale Of Future Royalties [Roll Forward] Liabilities Related To Sale Of Future Royalties Weighted average grant date fair value per share (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted-Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Repurchases and retirements of common stock Stock Repurchased and Retired During Period, Value 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Net loss per common share: Earnings Per Share [Abstract] Equity [Abstract] Equity [Abstract] Accumulated deficit Retained Earnings (Accumulated Deficit) Repurchases and retirements of common stock (in shares) Stock Repurchased and Retired During Period, Shares Filing of the first MAA - first indication Filing of MMA - First Indication [Member] Filing of MMA - First Indication Security deposit Security Deposit Forfeitures and cancellations (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Employee Stock Purchase Plan, 2017 Employee Stock Purchase Plan, 2017 [Member] Employee Stock Purchase Plan, 2017 [Member] General and administrative General and Administrative Expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Lease liability Total Operating Lease, Liability Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Filing of the first BLA - first indication Filing of Biologics License Application - First Indication [Member] Filing of Biologics License Application - First Indication Interest income Interest Income, Other Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation and amortization Depreciation, Depletion and Amortization Fair Value as of Grant Date Award Grant Date Fair Value Revenue from Contract with Customer, Product and Service [Extensible Enumeration] Revenue from Contract with Customer, Product and Service [Extensible Enumeration] Lease termination term Lessee, Operating Lease, Expiration Period Lessee, Operating Lease, Expiration Period Shares sold (in shares) Sale of Stock, Number of Shares Issued in Transaction Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Basis of Consolidation Consolidation, Policy [Policy Text Block] Net of proceeds Advance Future Royalties, Liability, Noncurrent, Net Advance Future Royalties, Liability, Noncurrent, Net Restatement Determination Date: Restatement Determination Date [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Title of 12(b) Security Title of 12(b) Security Common stock, $0.001 par value, 500,000 shares authorized, 27,434 shares and 26,597 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively Common Stock, Value, Issued Royalty Agreement, Up To $1.0 billion Royalty Agreement, Up To $1. 0 billion [Member] Royalty Agreement, Up To $1. 0 billion Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value DRI Healthcare Trust DRI Healthcare Trust [Member] DRI Healthcare Trust Second commercial sales milestone Second Commercial Sales Milestone [Member] Second Commercial Sales Milestone Aggregate offering of (up to) Sale of Stock, Authorized Aggregate Offering, Maximum Sale of Stock, Authorized Aggregate Offering, Maximum Certificates of deposit Certificates of Deposit [Member] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Cancelled (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Beginning balance Ending balance Advance Future Royalties, Liabilities Advance Future Royalties, Liabilities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Preferred stock, $0.001 par value, 10,000 shares authorized and no shares, issued or outstanding at June 30, 2024 and December 31, 2023, respectively Preferred Stock, Value, Issued Shares Subject to Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] ESPP Employee Stock [Member] Basic (in dollars per share) Earnings Per Share, Basic Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Award expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Other Liabilities Disclosure [Abstract] Effective interest rate Advance Future Royalties, Interest Rate, Effective Percentage Advance Future Royalties, Interest Rate, Effective Percentage Fourth commercial sales milestone Fourth Commercial Sales Milestone [Member] Fourth Commercial Sales Milestone Amounts accrued for property and equipment Capital Expenditures Incurred but Not yet Paid Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Weighted average remaining contractual term, other than options outstanding (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Schedule of Unrealized Loss and Fair Values in a Loss Position Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Issuance costs related to the sale of future royalties Issuance costs related to the sale of future royalties Advance Future Royalties, Issuance Costs Advance Future Royalties, Issuance Costs Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Total assets Assets Schedule of Milestones Achieved Collaborative Arrangement and Arrangement Other than Collaborative [Table Text Block] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount License Agreement, Centessa Pharmaceuticals (UK) Limited License Agreement, Centessa Pharmaceuticals (UK) Limited [Member] License Agreement, Centessa Pharmaceuticals (UK) Limited Termination Date Trading Arrangement Termination Date Description of the Business Nature of Operations [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Equity Incentive Plans Share-Based Payment Arrangement [Text Block] During 2027 Second Installment [Member] Second Installment Total transferred Asset Acquisition, Consideration Transferred Entity Address, City or Town Entity Address, City or Town Amounts accrued for issuance costs related to the sale of future royalties Noncash Advance Future Royalties, Issuance Costs, Incurred but Not yet Paid Noncash Advance Future Royalties, Issuance Costs, Incurred but Not yet Paid Schedule of Activity Related to Stock Option Awards Share-Based Payment Arrangement, Option, Activity [Table Text Block] Anti-TIM-3 (GSK4069889A/Cobolimab) AnaptysBio Generated Anti-TIM-3 (GSK4069889A/Cobolimab) [Member] AnaptysBio Generated Anti-TIM-3 (GSK4069889A/Cobolimab) Total Share-Based Payment Arrangement, Expense Net loss Net loss Net loss Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forfeitures and cancellations (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Area of leased property (sqft) Area of Real Estate Property Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Document Fiscal Year Focus Document Fiscal Year Focus Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Approximate dollar value of shares purchased (in dollars per share) Treasury Stock, Value, Acquired, Cost Method Weighted-average number of shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Entity Address, Address Line Two Entity Address, Address Line Two Lease term Lessee, Operating Lease, Term of Contract Name Forgone Recovery, Individual Name 2024 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Aggregate intrinsic value, options exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Document Period End Date Document Period End Date Sale of Stock [Axis] Sale of Stock [Axis] Amortization of issuance costs Amortization Of Advance Future Royalties Issuance Costs Amortization Of Advance Future Royalties Issuance Costs Non-cash interest expense Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total minimum payments required Lessee, Operating Lease, Liability, to be Paid Number of shares, beginning balance (in shares) Number of shares, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] Third commercial sales milestone Third Commercial Sales Milestone [Member] Third Commercial Sales Milestone Balance Sheet Accounts and Supplemental Disclosures Supplemental Balance Sheet Disclosures [Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Adjustment to Compensation: Adjustment to Compensation [Axis] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Milestones recognized through June 30, 2024 Cumulative Milestones Recognized [Member] Cumulative Milestones Recognized Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Accumulated Deficit Retained Earnings [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Asset Acquisition [Domain] Asset Acquisition [Domain] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] 12 months or greater, Gross unrealized losses Unrealized losses on available for sale investments in unrealized loss position for greater than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Restricted Stock Units RSUs Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Accrued professional fees and other expenses Accrued Professional Fees, Current Executive Category: Executive Category [Axis] First commercial sales milestone First Commercial Sales Milestone [Member] First Commercial Sales Milestone Name Awards Close in Time to MNPI Disclosures, Individual Name Non-cash interest expense and amortization of issuance costs Noncash Advance Future Royalties And Amortization Of Advance Future Royalties, Interest Expense Noncash Advance Future Royalties And Amortization Of Advance Future Royalties, Interest Expense Less than 12 months, Gross unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Entity Filer Category Entity Filer Category Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Purchases of investments Payments to Acquire Debt Securities, Available-for-Sale Company Selected Measure Name Company Selected Measure Name Initiated in vivo toxicology studies using good laboratory practices (GLPs) In Vivo Toxicology Studies [Member] In Vivo Toxicology Studies [Member] Collaboration Revenue [Member] Collaboration Revenue