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Fair Value Measurements (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Liabilities: |  |
Kolltan acquisition contingent consideration |  | $ 6,862
Fair value | Level 3 |  |
Liabilities: |  |
Kolltan acquisition contingent consideration | $ 0 | 6,862
Fair Value Measurements. | Level 1 |  |
Assets: |  |
Money market funds and cash equivalents | 0 |
Marketable securities | 0 |
Total financial assets at fair value | 0 |
Liabilities: |  |
Kolltan acquisition contingent consideration | 0 |
Total financial liabilities at fair value | 0 |
Fair Value Measurements. | Level 2 |  |
Assets: |  |
Money market funds and cash equivalents | 7,114 | 26,220
Marketable securities | 328,416 | 369,107
Total financial assets at fair value | 335,530 | 395,327
Liabilities: |  |
Kolltan acquisition contingent consideration | 0 |
Total financial liabilities at fair value | 0 |
Fair Value Measurements. | Level 3 |  |
Assets: |  |
Money market funds and cash equivalents | 0 |
Marketable securities | 0 |
Total financial assets at fair value | 0 |
Liabilities: |  |
Kolltan acquisition contingent consideration | 0 | 6,862
Total financial liabilities at fair value | 0 | 6,862
Fair Value Measurements. | Fair value |  |
Assets: |  |
Money market funds and cash equivalents | 7,114 | 26,220
Marketable securities | 328,416 | 369,107
Total financial assets at fair value | 335,530 | 395,327
Liabilities: |  |
Kolltan acquisition contingent consideration | 0 | 6,862
Total financial liabilities at fair value | $ 0 | $ 6,862

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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126966325&loc=d3e6819-128478 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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