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Fair Value Measurements - Financial Assets and Liabilities Carried at FV on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Assets: |  |
Exarafenib milestone asset (Note 4) | $ 3,307 | $ 3,214
Investment in equity securities | 2,382 | 3,529
Castle Creek warrants (Note 5) | 605 |
Liabilities: |  |
Exarafenib milestone contingent consideration (Note 4) | 3,307 | 3,214
Fair Value, Recurring |  |
Assets: |  |
Cash equivalents | 84,433 | 92,671
Exarafenib milestone asset (Note 4) | 3,307 | 3,214
Investment in equity securities | 2,382 | 3,529
Castle Creek warrants (Note 5) | 605 |
Total financial assets | 90,727 | 99,414
Liabilities: |  |
Exarafenib milestone contingent consideration (Note 4) | 3,307 | 3,214
Total financial liabilities | 3,307 | 3,214
Fair Value, Recurring | Money market funds |  |
Assets: |  |
Cash equivalents | 58,759 | 72,304
Fair Value, Recurring | U.S. treasury bills |  |
Assets: |  |
Cash equivalents | 25,674 | 20,367
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Cash equivalents | 84,433 | 92,671
Investment in equity securities | 2,382 | 3,529
Total financial assets | 86,815 | 96,200
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds |  |
Assets: |  |
Cash equivalents | 58,759 | 72,304
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. treasury bills |  |
Assets: |  |
Cash equivalents | 25,674 | 20,367
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Exarafenib milestone asset (Note 4) | 3,307 | 3,214
Castle Creek warrants (Note 5) | 605 |
Total financial assets | 3,912 | 3,214
Liabilities: |  |
Exarafenib milestone contingent consideration (Note 4) | 3,307 | 3,214
Total financial liabilities | $ 3,307 | $ 3,214

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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