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Fair Value Measurements (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Liabilities: |  |
Kolltan acquisition contingent consideration |  | $ 6,862
Fair value | Level 3 |  |
Liabilities: |  |
Kolltan acquisition contingent consideration |  | 6,862
Fair Value Measurements | Level 2 |  |
Assets: |  |
Money market funds and cash equivalents | $ 16,813 | 26,220
Marketable securities | 275,523 | 369,107
Total financial assets at fair value | 292,336 | 395,327
Fair Value Measurements | Level 3 |  |
Liabilities: |  |
Kolltan acquisition contingent consideration |  | 6,862
Total financial liabilities at fair value |  | 6,862
Fair Value Measurements | Fair value |  |
Assets: |  |
Money market funds and cash equivalents | 16,813 | 26,220
Marketable securities | 275,523 | 369,107
Total financial assets at fair value | $ 292,336 | 395,327
Liabilities: |  |
Kolltan acquisition contingent consideration |  | 6,862
Total financial liabilities at fair value |  | $ 6,862

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