STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Convertible preferred stock. Series A preferred stock	Convertible preferred stock. Series B-1 preferred stock	Convertible preferred stock. Series B-2 preferred stock	Convertible preferred stock. Series C preferred stock	Convertible preferred stock.	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Series A preferred stock	Series B-1 preferred stock	Series B-2 preferred stock	Series C preferred stock	Total
Balance, Beginning at Dec. 31, 2019							$ 171		$ (17,024)					$ (16,853)
Balance, Beginning (in shares) at Dec. 31, 2019						419,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options							202							202
Exercise of stock options (shares)						590,475
Stock-based compensation							354							354
Net loss									(17,123)					(17,123)
Balance, Ending at Dec. 31, 2020							727		(34,147)					$ (33,420)
Balance, Ending (in shares) at Dec. 31, 2020						1,009,479								1,009,479
Balance, Beginning at Dec. 31, 2019	$ 15,484	$ 24,778			$ 40,262
Balance, Beginning (in shares) at Dec. 31, 2019	8,187,100	7,888,392
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Preferred stock, net of offering costs			$ 25,056	$ 94,896
Issuance of preferred stock, net of offering costs (Shares)			6,527,654	12,954,423
Balance, Ending at Dec. 31, 2020	$ 15,484	$ 24,778	$ 25,056	$ 94,896	160,214
Balance, Ending (in shares) at Dec. 31, 2020	8,187,100	7,888,392	6,527,654	12,954,423						8,187,100	7,888,392	6,527,654	12,954,423
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Convertible preferred stock converted into shares of common stock	$ (15,484)	$ (24,778)	$ (25,056)	$ (94,896)	$ (160,214)	$ 4	160,210							$ 160,214
Convertible preferred stock converted into shares of common stock (in shares)	(8,187,100)	(7,888,392)	(6,527,654)	(12,954,423)		35,557,569
Initial public offering of common stock net of issuance costs						$ 1	186,147							186,148
Initial public offering of common stock net of issuance costs (Shares)						12,650,000
Exercise of stock options							116							116
Exercise of stock options (shares)						265,040
Purchase of common stock under employee stock purchase plan							248							248
Purchase of common stock under employee stock purchase plan (in shares)						18,220
Stock-based compensation							4,404							4,404
Other comprehensive income (loss)								$ (514)						(514)
Net loss									(42,813)					(42,813)
Balance, Ending at Dec. 31, 2021						$ 5	$ 351,852	$ (514)	$ (76,960)					$ 274,383
Balance, Ending (in shares) at Dec. 31, 2021						49,500,308								49,500,308
Balance, Ending (in shares) at Dec. 31, 2021										0	0	0	0