Fair Value Measurement - Summary of Financial Assets Measured at Fair Value On Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Cash equivalents:
Money market funds	$ 425,835	$ 135,756
Corporate bonds
Cash equivalents:
Money market funds	2,128
Level 1 [Member]
Cash equivalents:
Money market funds	418,127	135,756
Level 1 [Member] | Corporate bonds
Cash equivalents:
Money market funds	0
Level 2 [Member]
Cash equivalents:
Money market funds	7,708
Level 2 [Member] | Corporate bonds
Cash equivalents:
Money market funds	2,128
Level 3 [Member]
Cash equivalents:
Money market funds	0
Level 3 [Member] | Corporate bonds
Cash equivalents:
Money market funds	0
Money Market Funds [Member]
Cash equivalents:
Money market funds	412,070	135,756
Money Market Funds [Member] | Level 1 [Member]
Cash equivalents:
Money market funds	412,070	$ 135,756
Money Market Funds [Member] | Level 2 [Member]
Cash equivalents:
Money market funds	0
Money Market Funds [Member] | Level 3 [Member]
Cash equivalents:
Money market funds	0
Commercial Paper
Cash equivalents:
Money market funds	5,580
Commercial Paper | Level 1 [Member]
Cash equivalents:
Money market funds	0
Commercial Paper | Level 2 [Member]
Cash equivalents:
Money market funds	5,580
Commercial Paper | Level 3 [Member]
Cash equivalents:
Money market funds	0
US Treasury Securities
Cash equivalents:
Money market funds	6,057
US Treasury Securities | Level 1 [Member]
Cash equivalents:
Money market funds	6,057
US Treasury Securities | Level 2 [Member]
Cash equivalents:
Money market funds
US Treasury Securities | Level 3 [Member]
Cash equivalents:
Money market funds	$ 0