Equity Incentive Plans - Summary of Activities and Reconciliation of Common Stock Remaining for Grant (Detail) - shares	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted		(2,889,382)
2020 and 2021 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized under 2020 and 2021 Plans	8,536,541		5,636,000
Options granted	(3,338,944)		(1,320,592)
Options early exercised and repurchased	138,596		138,596
Remaining shares available for grant	5,336,193		4,454,004