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of 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Class of warrant or right, outstanding (in shares) Class of Warrant or Right, Outstanding Fair Value Measurements Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Government securities US Government Agencies Debt Securities [Member] Supplemental disclosures of noncash information: Supplemental Cash Flow Information [Abstract] Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Weighted Average Remaining Contractual Term, Vested and exercisable (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted-Average Remaining Contractual Term PEO Name PEO Name Accrued expenses Increase (Decrease) in Accrued Liabilities Leasehold improvements Leasehold Improvements [Member] Other segment items Segment Reporting, Other Segment Item, Amount Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Lease Termination on April 30, 2032 Lease Termination On April 30, 2032 [Member] Represents information relating to lease termination on April 30, 2032. Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Class of warrant or right, issued (in shares) Class of Warrant Or Right, Issued Class of Warrant Or Right, Issued Entity Tax Identification Number Entity Tax Identification Number Legal Entity [Axis] Legal Entity [Axis] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Weighted Average Exercise Price per Share Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accrued professional services Accrued Professional Fees, Current Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Organization and Nature of Business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Program expenses Program Expenses Program Expenses Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Total lease costs Lease, Cost Net loss per share attributable to common stockholders, basic (in dollars per share) Net loss per share, basic (in dollars per share) Earnings Per Share, Basic Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Accrued research and development expenses Accrued Research And Development Expenses, Current Accrued Research And Development Expenses, Current Short-term lease cost Short-Term Lease, Cost Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accumulated deficit Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Operating lease cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Expected dividend yield (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders' equity Liabilities and Equity Options to purchase common stock Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Schedule of Recognized Share-based Compensation Expense Recognized Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Other income, net Other Nonoperating Income (Expense) Name Awards Close in Time to MNPI Disclosures, Individual Name 2022 ATM Program 2022 ATM Program [Member] 2022 ATM Program 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] Aggregate Intrinsic Value Outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Operating cash flows from short-term leases Short-Term Lease Payments Sale of stock (in dollars per share) Sale Of Stock, Price Per Share Sold Sale Of Stock, Price Per Share Sold General and administrative General and Administrative Expense Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Sale of stock (in dollars per share) Sale of Stock, Price Per Share 2025 ATM Program 2025 ATM Program [Member] 2025 ATM Program Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, $0.001 par value; 10,000,000 shares authorized at September 30, 2026 and December 31, 2025; 0 shares issued or outstanding at September 30, 2026 and December 31, 2025 Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Aventis Inc. Aventis Inc. [Member] Aventis Inc. Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Marketable securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total cash equivalents and marketable securities Assets, Fair Value Disclosure Name Measure Name Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Goodwill impairments Goodwill, Impairment Loss Subsidiary or Equity Method Investee, Sale of Stock [Table] Subsidiary or Equity Method Investee, Sale of Stock [Table] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Other income (expense) Investment Income, Nonoperating [Abstract] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization expense Depreciation and amortization expense Depreciation, Depletion and Amortization Entity Address, Address Line Two Entity Address, Address Line Two Stock, Class of Stock [Table] Stock, Class of Stock [Table] Current assets: Assets, Current [Abstract] Weighted-average remaining lease term - operating leases (in years) Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Financial liabilities classified as Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net Award Timing Method Award Timing Method [Text Block] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Aggregate number of shares outstanding (as a percent) Aggregate Number Of Shares Outstanding Percentage of aggregate number of shares outstanding. Expected volatility, minimum (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Net loss Net loss Net loss Net loss Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Intrinsic Value [Abstract] No definition available. Proceeds from exercise of stock options Proceeds from Stock Options Exercised Interest income Investment Income, Interest Unaudited Interim Financial Information Unaudited Interim Financial Information, Policy [Policy Text Block] Disclosure of accounting policy for unaudited interim financial information. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]