Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Marketable securities:
Total cash equivalents and marketable securities	$ 421,397	$ 451,166
Level 1
Marketable securities:
Total cash equivalents and marketable securities	40,248	59,162
Level 2
Marketable securities:
Total cash equivalents and marketable securities	381,149	392,004
Money Market Funds
Cash equivalents:
Cash equivalents	40,248	59,162
Money Market Funds | Level 1
Cash equivalents:
Cash equivalents	40,248	59,162
Corporate Debt Securities
Cash equivalents:
Cash equivalents	5,501	11,649
Marketable securities:
Marketable securities:	298,738	308,300
Corporate Debt Securities | Level 2
Cash equivalents:
Cash equivalents	5,501	11,649
Marketable securities:
Marketable securities:	298,738	308,300
U.S. Treasury Securities
Cash equivalents:
Cash equivalents		5,000
Marketable securities:
Marketable securities:	25,852	29,172
U.S. Treasury Securities | Level 2
Cash equivalents:
Cash equivalents		5,000
Marketable securities:
Marketable securities:	25,852	29,172
U.S. Government Debt Securities
Marketable securities:
Marketable securities:	51,058	37,883
U.S. Government Debt Securities | Level 2
Marketable securities:
Marketable securities:	$ 51,058	$ 37,883