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Fair Value Measurements (Details) - Fair Value Measurements Recurring - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financial assets: |  |
Total financial assets measured at fair value on a recurring basis | $ 214,394 | $ 300,160
Financial liabilities: |  |
Total financial liabilities measured at fair value on a recurring basis | 410 | 527
Stock price appreciation milestones |  |
Financial liabilities: |  |
Stock price appreciation milestones | 410 | 527
Money market funds |  |
Financial assets: |  |
Money market funds | 23,316 | 29,491
U.S. Treasury debt securities |  |
Financial assets: |  |
Investment | 41,705 | 50,036
Non-U.S. government securities |  |
Financial assets: |  |
Investment | 3,230 | 2,995
Municipal securities |  |
Financial assets: |  |
Investment |  | 2,492
Corporate debt securities |  |
Financial assets: |  |
Investment | 111,717 | 188,239
Commercial paper |  |
Financial assets: |  |
Investment | 34,426 | 26,907
Quoted prices in Active Market for Identical Assets (Level 1) |  |
Financial assets: |  |
Total financial assets measured at fair value on a recurring basis | 65,021 | 79,527
Quoted prices in Active Market for Identical Assets (Level 1) | Money market funds |  |
Financial assets: |  |
Money market funds | 23,316 | 29,491
Quoted prices in Active Market for Identical Assets (Level 1) | U.S. Treasury debt securities |  |
Financial assets: |  |
Investment | 41,705 | 50,036
Significant Other Observable Inputs (Level 2) |  |
Financial assets: |  |
Total financial assets measured at fair value on a recurring basis | 149,373 | 220,633
Significant Other Observable Inputs (Level 2) | Non-U.S. government securities |  |
Financial assets: |  |
Investment | 3,230 | 2,995
Significant Other Observable Inputs (Level 2) | Municipal securities |  |
Financial assets: |  |
Investment |  | 2,492
Significant Other Observable Inputs (Level 2) | Corporate debt securities |  |
Financial assets: |  |
Investment | 111,717 | 188,239
Significant Other Observable Inputs (Level 2) | Commercial paper |  |
Financial assets: |  |
Investment | 34,426 | 26,907
Significant Unobservable Inputs (Level 3) |  |
Financial liabilities: |  |
Total financial liabilities measured at fair value on a recurring basis | 410 | 527
Significant Unobservable Inputs (Level 3) | Stock price appreciation milestones |  |
Financial liabilities: |  |
Stock price appreciation milestones | $ 410 | $ 527

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