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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
Mar. 31, 2022
Dec. 31, 2021
Financial assets    
Total financial assets $ 489,960 $ 563,087
Level 1    
Financial assets    
Total financial assets 92,096 131,946
Level 2    
Financial assets    
Total financial assets 397,864 431,141
Money Market Funds    
Financial assets    
Total financial assets 92,096 131,946
Money Market Funds | Level 1    
Financial assets    
Total financial assets 92,096 131,946
U.S. Government Debt Securities    
Financial assets    
Total financial assets 358,291 391,145
U.S. Government Debt Securities | Level 2    
Financial assets    
Total financial assets 358,291 391,145
Corporate Bonds    
Financial assets    
Total financial assets 39,573 39,996
Corporate Bonds | Level 2    
Financial assets    
Total financial assets $ 39,573 $ 39,996