Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value (Detail) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Financial assets:
Assets, Fair Value	$ 126,638,000	$ 97,376,000
Corporate Debt Securities [Member]
Financial assets:
Assets, Fair Value	33,264,000	41,511,000
US Government Bonds [Member]
Financial assets:
Assets, Fair Value	41,987,000	42,345,000
Money Market Funds [Member]
Financial assets:
Assets, Fair Value	40,483,000	13,520,000
Commercial Paper [Member]
Financial assets:
Assets, Fair Value	10,904,000
Level 1 [Member]
Financial assets:
Assets, Fair Value	40,483,000	13,520,000
Level 1 [Member] | Money Market Funds [Member]
Financial assets:
Assets, Fair Value	40,483,000	13,520,000
Level 2 [Member]
Financial assets:
Assets, Fair Value	86,155,000	83,856,000
Level 2 [Member] | Corporate Debt Securities [Member]
Financial assets:
Assets, Fair Value	33,264,000	41,511,000
Level 2 [Member] | US Government Bonds [Member]
Financial assets:
Assets, Fair Value	41,987,000	42,345,000
Level 2 [Member] | Commercial Paper [Member]
Financial assets:
Assets, Fair Value	10,904,000
Level 3 [Member]
Financial assets:
Assets, Fair Value	$ 0	$ 0