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Fair Value Measurements - Financial Assets and Liabilities Carried at FV on Recurring Basis and Exarafenib Milestone Contingent Consideration (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Exarafenib milestone asset (Note 4) | $ 2,922 |
Liabilities: |  |
Exarafenib milestone contingent consideration (Note 4) | 2,922 |
Fair Value, Recurring |  |
Assets: |  |
Cash equivalents | 128,877 | $ 28,352
Exarafenib milestone asset (Note 4) | 2,922 |
Equity securities | 696 | 161
Total financial assets | 132,495 | 28,513
Liabilities: |  |
Exarafenib milestone contingent consideration (Note 4) | 2,922 |
Contingent consideration under RPAs, AAAs and CPPAs, measured at fair value |  | 1,000
Total financial liabilities | 2,922 |
Fair Value, Recurring | Money market funds |  |
Assets: |  |
Cash equivalents | 128,877 | 28,352
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Cash equivalents | 128,877 | 28,352
Equity securities | 696 | 161
Total financial assets | 129,573 | 28,513
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds |  |
Assets: |  |
Cash equivalents | 128,877 | 28,352
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Exarafenib milestone asset (Note 4) | 2,922 |
Total financial assets | 2,922 |
Liabilities: |  |
Exarafenib milestone contingent consideration (Note 4) | 2,922 |
Contingent consideration under RPAs, AAAs and CPPAs, measured at fair value |  | $ 1,000
Total financial liabilities | $ 2,922 |

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