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Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financial Assets |  |
Marketable securities | $ 478,461 | $ 619,916
Money market funds |  |
Financial Assets |  |
Marketable securities | 210,705 | 203,519
U.S. Treasuries |  |
Financial Assets |  |
Marketable securities | 68,152 | 123,933
Commercial paper |  |
Financial Assets |  |
Marketable securities | 42,034 | 89,687
Corporate notes/bonds |  |
Financial Assets |  |
Marketable securities | 34,024 | 76,078
Recurring |  |
Financial Assets |  |
Total financial assets | 482,338 | 623,793
Recurring | Money market funds |  |
Financial Assets |  |
Cash and cash equivalents | 210,705 | 203,519
Restricted cash | $ 3,877 | $ 3,877
Restricted Cash and Cash Equivalents, Statement of Financial Position [Extensible Enumeration] | Other Assets, Noncurrent | Other Assets, Noncurrent
Recurring | U.S. Treasuries |  |
Financial Assets |  |
Marketable securities | $ 68,152 | $ 123,933
Recurring | Government agency securities |  |
Financial Assets |  |
Marketable securities | 123,546 | 126,699
Recurring | Commercial paper |  |
Financial Assets |  |
Marketable securities | 42,034 | 89,687
Recurring | Corporate notes/bonds |  |
Financial Assets |  |
Marketable securities | 34,024 | 76,078
Recurring | Level 1 |  |
Financial Assets |  |
Total financial assets | 282,734 | 331,329
Recurring | Level 1 | Money market funds |  |
Financial Assets |  |
Cash and cash equivalents | 210,705 | 203,519
Restricted cash | $ 3,877 | $ 3,877
Restricted Cash and Cash Equivalents, Statement of Financial Position [Extensible Enumeration] | Other Assets, Noncurrent | Other Assets, Noncurrent
Recurring | Level 1 | U.S. Treasuries |  |
Financial Assets |  |
Marketable securities | $ 68,152 | $ 123,933
Recurring | Level 2 |  |
Financial Assets |  |
Total financial assets | 199,604 | 292,464
Recurring | Level 2 | Government agency securities |  |
Financial Assets |  |
Marketable securities | 123,546 | 126,699
Recurring | Level 2 | Commercial paper |  |
Financial Assets |  |
Marketable securities | 42,034 | 89,687
Recurring | Level 2 | Corporate notes/bonds |  |
Financial Assets |  |
Marketable securities | $ 34,024 | $ 76,078

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