Equity Incentive Plans - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Exercise Price And Additional Disclosures [Abstract]
Shares Available for Grant, Outstanding, Beginning balance	1,021,109
Shares Available for Grant, Additional options authorized	2,543,924
Shares Available for Grant, Granted	(1,866,785)
Shares Available for Grant, Restricted stock units granted	(371,500)
Performance stock units granted	(270,000)
Shares Available for Grant, Forfeited or cancelled	248,647
Restricted stock units forfeited	22,250
Shares Available for Grant, Outstanding, Ending balance	1,327,645	1,021,109
Vested and exercisable as of December 31, 2021	2,983,332
Number of Options, Outstanding, Beginning balance	3,697,075
Number of Options, Granted	1,866,785
Number of Options, Exercised	(53,028)
Number of Options, Forfeited or cancelled	(248,647)
Number of Options, Outstanding, Ending balance	5,262,185	3,697,075
Weighted Average Exercise Price Per Option, Outstanding, Beginning balance	$ 10.81
Weighted Average Exercise Price Per Option, Granted	8.92
Weighted Average Exercise Price Per Option, Exercised	6.81
Weighted Average Exercise Price Per Option, Forfeited or cancelled	9.52
Weighted Average Exercise Price Per Option, Outstanding, Ending balance	10.24	$ 10.81
Weighted Average Exercise Price Per Option, Vested and exercisable	$ 11.20
Outstanding as of December 31, 2020	7 years 3 months	7 years 6 months 18 days
Vested and exercisable as of December 31, 2021	6 years 1 month 9 days
Aggregate Intrinsic Value	$ 530	$ 9,048
Aggregate Intrinsic Value, Vested and exercisable	$ 482