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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 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial Assets |  |
Total financial assets | $ 336,953 | $ 46,853
Liabilities: |  |
Total liabilities | 42,700 |
U.S. government treasury securities |  |
Financial Assets |  |
Total financial assets | 32,843 |
Commercial paper |  |
Financial Assets |  |
Total financial assets | 104,141 | 23,641
U.S. government agency securities |  |
Financial Assets |  |
Total financial assets | 16,257 |
Corporate bonds |  |
Financial Assets |  |
Total financial assets | 33,064 | 3,732
CVR liability |  |
Liabilities: |  |
Total liabilities | 42,700 |
Money market funds |  |
Financial Assets |  |
Total financial assets | 150,648 | 15,250
Level 1 |  |
Financial Assets |  |
Total financial assets | 183,491 | 15,250
Liabilities: |  |
Total liabilities | 0 |
Level 1 | U.S. government treasury securities |  |
Financial Assets |  |
Total financial assets | 32,843 |
Level 1 | Commercial paper |  |
Financial Assets |  |
Total financial assets | 0 | 0
Level 1 | U.S. government agency securities |  |
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 |
Level 1 | Money market funds |  |
Financial Assets |  |
Total financial assets | 150,648 | 15,250
Level 2 |  |
Financial Assets |  |
Total financial assets | 153,462 | 31,603
Liabilities: |  |
Total liabilities | 0 |
Level 2 | U.S. government treasury securities |  |
Financial Assets |  |
Total financial assets | 0 |
Level 2 | Commercial paper |  |
Financial Assets |  |
Total financial assets | 104,141 | 23,641
Level 2 | U.S. government agency securities |  |
Financial Assets |  |
Total financial assets | 16,257 | 4,230
Level 2 | Corporate bonds |  |
Financial Assets |  |
Total financial assets | 33,064 | 3,732
Level 2 | CVR liability |  |
Liabilities: |  |
Total liabilities | 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 | 42,700 |
Level 3 | U.S. government treasury securities |  |
Financial Assets |  |
Total financial assets | 0 |
Level 3 | Commercial paper |  |
Financial Assets |  |
Total financial assets | 0 | 0
Level 3 | U.S. government agency securities |  |
Financial Assets |  |
Total financial assets | 0 |
Level 3 | Corporate bonds |  |
Financial Assets |  |
Total financial assets | 0 | 0
Level 3 | CVR liability |  |
Liabilities: |  |
Total liabilities | 42,700 |
Level 3 | Money market funds |  |
Financial Assets |  |
Total financial assets | $ 0 | $ 0

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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