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Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Recurring basis - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Financial assets |  |
Total financial assets | $ 444,612 | $ 563,087
Level 1 |  |
Financial assets |  |
Total financial assets | 70,358 | 131,946
Level 2 |  |
Financial assets |  |
Total financial assets | 374,254 | 431,141
Money Market Funds |  |
Financial assets |  |
Total financial assets | 70,358 | 131,946
Money Market Funds | Level 1 |  |
Financial assets |  |
Total financial assets | 70,358 | 131,946
U.S. Government Debt Securities |  |
Financial assets |  |
Total financial assets | 334,857 | 391,145
U.S. Government Debt Securities | Level 2 |  |
Financial assets |  |
Total financial assets | 334,857 | 391,145
Corporate Bonds |  |
Financial assets |  |
Total financial assets | 39,397 | 39,996
Corporate Bonds | Level 2 |  |
Financial assets |  |
Total financial assets | $ 39,397 | $ 39,996

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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