Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Convertible preferred stock Convertible preferred stock	Common stock	Additional paid-in capital	Accumulated deficit
Beginning balance at Dec. 31, 2020		$ 45,105
Beginning balance (in shares) at Dec. 31, 2020		4,203,139
Ending balance at Mar. 31, 2021		$ 45,105
Ending balance (in shares) at Mar. 31, 2021		4,203,139
Beginning balance at Dec. 31, 2020	$ (31,036)		$ 0	$ 21,312	$ (52,348)
Beginning balance (in shares) at Dec. 31, 2020			29,366,940
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon exercise of stock options	125			125
Issuance of common stock upon exercise of stock options (in shares)			273,580
Stock-based compensation	710			710
Net (loss) income	8,043				8,043
Ending balance at Mar. 31, 2021	(22,158)		$ 0	22,147	(44,305)
Ending balance (in shares) at Mar. 31, 2021			29,640,520
Beginning balance at Dec. 31, 2021	76,615		$ 6	142,515	(65,906)
Beginning balance (in shares) at Dec. 31, 2021			81,400,860
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon exercise of stock options	$ 252			252
Issuance of common stock upon exercise of stock options (in shares)	205,730		205,730
Vesting of early exercised stock options	$ 295			295
Issuance of restricted stock units	18			18
Issuance of restricted stock units (in shares)			2,733
Repurchases of early exercised stock options	(4)			(4)
Repurchases of early exercised stock options (in shares)			(2,330)
Stock-based compensation	14,667			14,667
Net (loss) income	(7,376)				(7,376)
Ending balance at Mar. 31, 2022	$ 84,467		$ 6	$ 157,743	$ (73,282)
Ending balance (in shares) at Mar. 31, 2022			81,606,993