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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
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Financial Assets: |  |
Total financial assets | $ 563,127 | $ 601,405
Liabilities: |  |
Total liabilities | 59,300 | 61,700
U.S. government treasury securities |  |
Financial Assets: |  |
Total financial assets | 223,500 | 227,244
U.S. government agency securities |  |
Financial Assets: |  |
Total financial assets | 72,730 | 86,681
Commercial paper |  |
Financial Assets: |  |
Total financial assets | 147,450 | 165,130
Corporate bonds |  |
Financial Assets: |  |
Total financial assets | 72,647 | 56,448
CVR liability |  |
Liabilities: |  |
Total liabilities | 59,300 | 61,700
Level 1 |  |
Financial Assets: |  |
Total financial assets | 270,300 | 293,146
Liabilities: |  |
Total liabilities | 0 | 0
Level 1 | U.S. government treasury securities |  |
Financial Assets: |  |
Total financial assets | 223,500 | 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 2 |  |
Financial Assets: |  |
Total financial assets | 292,827 | 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 | 72,730 | 86,681
Level 2 | Commercial paper |  |
Financial Assets: |  |
Total financial assets | 147,450 | 165,130
Level 2 | Corporate bonds |  |
Financial Assets: |  |
Total financial assets | 72,647 | 56,448
Level 2 | CVR liability |  |
Liabilities: |  |
Total liabilities | 0 | 0
Level 3 |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Liabilities: |  |
Total liabilities | 59,300 | 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 | 59,300 | 61,700
Money market funds |  |
Financial Assets: |  |
Total financial assets | 46,800 | 65,902
Money market funds | Level 1 |  |
Financial Assets: |  |
Total financial assets | 46,800 | 65,902
Money market funds | Level 2 |  |
Financial Assets: |  |
Total financial assets | 0 | 0
Money market funds | Level 3 |  |
Financial Assets: |  |
Total financial assets | $ 0 | $ 0

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