Unaudited Condensed Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Convertible Preferred Stock [Member]	Series A Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Temporary equity, Beginning balance at Dec. 31, 2020		$ 21,624
Temporary equity, Beginning balance (in shares) at Dec. 31, 2020		6,838,829
Beginning balance at Dec. 31, 2020	$ (14,638)			$ 1	$ 100		$ (14,739)
Beginning balance (in shares) at Dec. 31, 2020				1,046,599
Issuance of convertible preferred stock, net of issuance costs			$ 55,722
Issuance of convertible preferred stock, net of issuance costs (in shares)			5,894,740
Exercise of common stock options	20				20
Exercise of common stock options (in shares)				113,418
Vesting of restricted shares	8				8
Vesting of restricted shares (in shares)				66,960
Stock-based compensation	123				123
Unrealized gain (loss) on investment securities	0
Net loss	(2,284)						(2,284)
Temporary equity, Ending balance at Mar. 31, 2021		$ 77,346
Temporary equity, Ending balance (in shares) at Mar. 31, 2021		12,733,569
Ending balance at Mar. 31, 2021	(16,771)			$ 1	251		(17,023)
Ending balance (in shares) at Mar. 31, 2021				1,226,977
Beginning balance at Dec. 31, 2021	366,327			$ 41	413,967	$ (270)	(47,411)
Beginning balance (in shares) at Dec. 31, 2021				41,243,137
Exercise of common stock options	$ 1				1
Exercise of common stock options (in shares)	6,405			6,405
Vesting of restricted shares	$ 503				503
Vesting of restricted shares (in shares)				144,118
Stock-based compensation	3,958				3,958
Unrealized gain (loss) on investment securities	(1,297)					(1,297)
Net loss	(13,410)						(13,410)
Ending balance at Mar. 31, 2022	$ 356,082			$ 41	$ 418,429	$ (1,567)	$ (60,821)
Ending balance (in shares) at Mar. 31, 2022				41,393,660