Condensed Statements of Redeemable Convertible Preferred Stock and Stockholders' Deficit - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Balance at Dec. 31, 2020	$ (221,811)		$ 1	$ 6,269	$ 11	$ (228,092)
Temporary Equity, Balance, shares at Dec. 31, 2020		12,397,838
Temporary Equity, Balance at Dec. 31, 2020		$ 123,255
Balance, shares at Dec. 31, 2020			1,192,299
Issuance of common stock upon exercise of stock options	886		$ 2	884
Issuance of common stock upon exercise of stock options, shares			1,465,158
Issuance of common stock upon early exercise of stock options, shares			363,555
Stock-based compensation expense	131			131
Net Income (Loss)	(14,948)					(14,948)
Balance at Mar. 31, 2021	(235,742)		$ 3	7,284	11	(243,040)
Temporary Equity, Balance, shares at Mar. 31, 2021		12,397,838
Temporary Equity, Balance at Mar. 31, 2021		$ 123,255
Balance, shares at Mar. 31, 2021			3,021,012
Balance at Dec. 31, 2021	44,104		$ 28	293,621	11	(249,556)
Balance, shares at Dec. 31, 2021			28,822,283
Issuance of common stock upon exercise of stock options	$ 3			3
Issuance of common stock upon exercise of stock options, shares	5,166		5,166
Vesting of early exercised stock options	$ 39			39
Stock-based compensation expense	1,523			1,523
Net Income (Loss)	(10,925)					(10,925)
Balance at Mar. 31, 2022	$ 34,744		$ 28	$ 295,186	$ 11	$ (260,481)
Balance, shares at Mar. 31, 2022			28,827,449