Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)
Temporary Equity, Beginning Balance at Dec. 31, 2020		$ 41,323
Temporary Equity, Beginning Balance (in shares) at Dec. 31, 2020		7,766,582
Beginning Balance at Dec. 31, 2020	$ (23,437)		$ 1	$ 7,433		$ (30,871)
Beginning Balance (in shares) at Dec. 31, 2020			9,710,830
Issuance of Series C convertible preferred stock, net of issuance costs of $6.2 million		$ 108,827
Issuance of Series C convertible preferred stock, net of issuance costs of $6.2 million (in shares)		6,663,940
Issuance of common stock on exercise of options	564			564
Issuance of common stock on exercise of stock options (in shares)			584,614
Stock-based compensation expense	343			343
Net loss	(13,159)					(13,159)
Temporary Equity, Ending Balance at Mar. 31, 2021		$ 150,150
Temporary Equity, Ending Balance (in shares) at Mar. 31, 2021		14,430,522
Ending Balance at Mar. 31, 2021	(35,689)		$ 1	8,340		(44,030)
Ending Balance (in shares) at Mar. 31, 2021			10,295,444
Beginning Balance at Dec. 31, 2021	387,825		$ 6	485,748	$ (135)	(97,794)
Beginning Balance (in shares) at Dec. 31, 2021			60,263,158
Issuance of common stock under employee stock plans (in shares)			36,596
Issuance of common stock under employee stock plans	361			361
Issuance of common stock on exercise of options	$ 629			629
Issuance of common stock on exercise of stock options (in shares)	389,855		389,855
Stock-based compensation expense	$ 3,024			3,024
Net unrealized loss on available-for-sale marketable securities	(954)				(954)
Net loss	(19,088)					(19,088)
Ending Balance at Mar. 31, 2022	$ 371,797		$ 6	$ 489,762	$ (1,089)	$ (116,882)
Ending Balance (in shares) at Mar. 31, 2022			60,689,609