Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Fair value of financial assets	$ 325,252	$ 344,221
Level 1
Assets:
Fair value of financial assets	273,301	270,740
Level 2
Assets:
Fair value of financial assets	51,951	73,481
Level 3
Assets:
Fair value of financial assets	0	0
U.S. treasury securities
Assets:
Fair value of financial assets	168,009	140,977
U.S. treasury securities | Level 1
Assets:
Fair value of financial assets	168,009	140,977
U.S. treasury securities | Level 2
Assets:
Fair value of financial assets	0	0
U.S. treasury securities | Level 3
Assets:
Fair value of financial assets	0	0
Money market funds
Assets:
Fair value of financial assets	105,292	129,763
Money market funds | Level 1
Assets:
Fair value of financial assets	105,292	129,763
Money market funds | Level 2
Assets:
Fair value of financial assets	0	0
Money market funds | Level 3
Assets:
Fair value of financial assets	0	0
Commercial paper
Assets:
Fair value of financial assets	44,373	8,497
Commercial paper | Level 1
Assets:
Fair value of financial assets	0	0
Commercial paper | Level 2
Assets:
Fair value of financial assets	44,373	8,497
Commercial paper | Level 3
Assets:
Fair value of financial assets	0	0
Corporate and agency bonds
Assets:
Fair value of financial assets	7,578	64,984
Corporate and agency bonds | Level 1
Assets:
Fair value of financial assets	0	0
Corporate and agency bonds | Level 2
Assets:
Fair value of financial assets	7,578	64,984
Corporate and agency bonds | Level 3
Assets:
Fair value of financial assets	$ 0	$ 0