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Summary of Significant Accounting Policies - Summary of Cash, Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Cash and cash equivalents |  |
Cash | $ 48,817 | $ 52,812
Money market accounts | 186,707 | 159,150
Total cash and cash equivalents | 235,524 | 211,962
Marketable securities |  |
Marketable securities | 9,989 | 19,257
Corporate Bonds |  |
Marketable securities |  |
Marketable securities | $ 9,989 | 11,548
Agency Mortgage-backed Securities |  |
Marketable securities |  |
Marketable securities |  | 3,602
US Treasury Securities |  |
Marketable securities |  |
Marketable securities |  | $ 4,107

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