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Equity Incentive Plans - Summary of Company stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Shares	3,137,776
Number of Shares, Granted	2,487,253
Number of Shares, Forfeited/cancelled	(150,520)
Number of Shares, Exercised	(477,564)
Number of Shares	4,996,945	3,137,776
Vested and exercisable as of December 31, 2021	2,098,249
Vested and expected to vest as of December 31, 2021	4,963,575
Weighted-Average Exercise Price	$ 0.94
Weighted-Average Exercise Price, Grants	11.35
Weighted-Average Exercise Price, Forfeited/cancelled	3.77
Weighted-Average Exercise Price, Exercised	0.78
Weighted-Average Exercise Price	6.05	$ 0.94
Weighted-Average Exercise Price, Vested and exercisable	2.22
Weighted-Average Exercise Price, Expected to vest	$ 6.09
Weighted Average Remaining Contractual Term	7 years 7 months 6 days	6 years 9 months 18 days
Weighted average contractual term, vested and exercisable	5 years 7 months 6 days
Weighted average contractual term, vested and expected	7 years 7 months 6 days
Average Intrinsic Value	$ 18,656
Average Intrinsic Value	58,420	$ 18,656
Average Intrinsic Value, Vested and exercisable as of December 31, 2021	32,268
Average Intrinsic Value, Vested and expected as of December 31, 2021	$ 57,895

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