Condensed Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Series C Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Notes Receivable from Stockholders	Accumulated Other Comprehensive Loss	Accumulated Deficit
Temporary equity balance, shares at Dec. 31, 2020		24,493,528
Temporary equity, balance at Dec. 31, 2020		$ 220,754
Balance at Dec. 31, 2020	$ (81,315)				$ 1,584	$ (87)		$ (82,812)
Balance, shares at Dec. 31, 2020				1,210,306
Issuance of convertible preferred stock, net of issuance costs			$ 19,981
Issuance of convertible preferred stock, net of issuance costs, shares			1,608,750
Issuance of common stock upon exercise of stock options	29				29
Issuance of common stock upon exercise of stock options, shares				12,508
Repurchase of common stock related to early exercise of options, shares				(365)
Vesting of early exercised stock options	9				9
Stock-based compensation	432				432
Net loss	(13,098)							(13,098)
Balance at Mar. 31, 2021	(93,943)				2,054	$ (87)		(95,910)
Temporary equity balance, shares at Mar. 31, 2021		26,102,278
Temporary equity, balance at Mar. 31, 2021		$ 240,735
Balance, shares at Mar. 31, 2021				1,222,449
Balance at Dec. 31, 2021	278,526			$ 4	434,196		$ (141)	(155,533)
Balance, shares at Dec. 31, 2021				41,291,374
Issuance of common stock upon exercise of stock options	17				17
Issuance of common stock upon exercise of stock options, shares				7,652
Vesting of early exercised stock options	6				6
Stock-based compensation	2,094				2,094
Other comprehensive loss	(490)						(490)
Net loss	(31,056)							(31,056)
Balance at Mar. 31, 2022	$ 249,097			$ 4	$ 436,313		$ (631)	$ (186,589)
Balance, shares at Mar. 31, 2022				41,299,026