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Fair Value Measurements - Schedule of Fair Value of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financial Assets: |  |
Total financial assets | $ 484,477 | $ 601,405
Liabilities: |  |
Total liabilities | 14,250 | 61,700
U.S. government treasury securities |  |
Financial Assets: |  |
Total financial assets | 231,675 | 227,244
U.S. government agency securities |  |
Financial Assets: |  |
Total financial assets | 64,914 | 86,681
Commercial paper |  |
Financial Assets: |  |
Total financial assets | 61,085 | 165,130
Corporate bonds |  |
Financial Assets: |  |
Total financial assets | 63,627 | 56,448
CVR liability |  |
Liabilities: |  |
Total liabilities | 14,250 | 61,700
Money market funds |  |
Financial Assets: |  |
Total financial assets | 63,176 | 65,902
Level 1 |  |
Financial Assets: |  |
Total financial assets | 294,851 | 293,146
Liabilities: |  |
Total liabilities | 0 | 0
Level 1 | U.S. government treasury securities |  |
Financial Assets: |  |
Total financial assets | 231,675 | 227,244
Level 1 | U.S. government agency securities |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 1 | Commercial paper |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 1 | Corporate bonds |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 1 | CVR liability |  |
Liabilities: |  |
Total liabilities | 0 | 0
Level 1 | Money market funds |  |
Financial Assets: |  |
Total financial assets | 63,176 | 65,902
Level 2 |  |
Financial Assets: |  |
Total financial assets | 189,626 | 308,259
Liabilities: |  |
Total liabilities | 0 | 0
Level 2 | U.S. government treasury securities |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 2 | U.S. government agency securities |  |
Financial Assets: |  |
Total financial assets | 64,914 | 86,681
Level 2 | Commercial paper |  |
Financial Assets: |  |
Total financial assets | 61,085 | 165,130
Level 2 | Corporate bonds |  |
Financial Assets: |  |
Total financial assets | 63,627 | 56,448
Level 2 | CVR liability |  |
Liabilities: |  |
Total liabilities | 0 | 0
Level 2 | Money market funds |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 3 |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Liabilities: |  |
Total liabilities | 14,250 | 61,700
Level 3 | U.S. government treasury securities |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 3 | U.S. government agency securities |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 3 | Commercial paper |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 3 | Corporate bonds |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Level 3 | CVR liability |  |
Liabilities: |  |
Total liabilities | 14,250 | 61,700
Level 3 | Money market funds |  |
Financial Assets: |  |
Total financial assets | $ 0 | $ 0

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