Condensed Consolidated Statements of Stockholder's Equity (Deficit) - USD ($) $ in Thousands	Total	Accumulated Other Comprehensive Income (Loss)	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2020	$ 280,791	$ 13	$ 4	$ 464,597	$ (183,823)
Beginning balance, Shares at Dec. 31, 2020			43,059,632
Exercise of stock options	166			166
Exercise of stock options, Shares			49,328
Stock-based compensation	3,845			3,845
Unrealized loss on marketable securities	(107)	(107)
Net loss	(20,971)				(20,971)
Other	(19)			(19)
Ending balance at Mar. 31, 2021	263,705	(94)	$ 4	468,589	(204,794)
Ending balance, Shares at Mar. 31, 2021			43,108,960
Beginning balance at Dec. 31, 2021	389,606	(775)	$ 5	658,091	(267,715)
Beginning balance, Shares at Dec. 31, 2021			48,688,875
Exercise of stock options	260			260
Exercise of stock options, Shares			52,707
Issuances of common stock under 2020 ESPP	220			220
Issuance of common stock under 2020 ESPP, Shares			8,028
Stock-based compensation	8,879			8,879
Unrealized loss on marketable securities	(2,875)	(2,875)
Net loss	(31,620)				(31,620)
Other	59			59
Other, Shares			1,880
Ending balance at Mar. 31, 2022	$ 364,529	$ (3,650)	$ 5	$ 667,509	$ (299,335)
Ending balance, Shares at Mar. 31, 2022			48,751,490