Unaudited Condensed Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Series D-2 Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ (97,541)				$ 1,605	$ (99,146)
Temporary Equity, Balance, shares at Dec. 31, 2020		160,864,434
Temporary Equity, Balance at Dec. 31, 2020		$ 126,023
Balance, shares at Dec. 31, 2020				1,713,622
Issuance of convertible preferred stock for cash, net of issuance costs			$ 73,763
Issuance of convertible preferred stock for cash, net of issuance costs, shares			86,775,740
Issuance of convertible preferred stock for settlement of deferred purchase price			$ 6,144
Issuance of convertible preferred stock for settlement of deferred purchase price, shares			7,219,560
Reclassification of convertible preferred stock purchase right liability		$ 4,880
Conversion of convertible preferred stock into common stock at initial public offering	210,810			$ 3	210,807
Temporary Equity, Conversion of convertible preferred stock into common stock at initial public offering, shares		(254,859,734)
Temporary Equity, Conversion of convertible preferred stock into common stock at initial public offering		$ (210,810)
Conversion of convertible preferred stock into common stock at initial public offering, shares				25,485,955
Issuance of shares of common stock in initial public offering for cash, net of issuance costs	199,838			$ 1	199,837
Issuance of shares of common stock in initial public offering for cash, net of issuance costs, shares				11,500,000
Reclassification of convertible preferred stock warrants	169				169
Issuance of common stock in exchange for services	3				3
Issuance of common stock in exchange for services, shares				500
Issuance of common stock upon exercise of stock options	64				64
Issuance of common stock upon exercise of stock options, shares				56,645
Vesting of early exercised stock options	9				9
Vesting of early exercised stock options, shares				12,981
Stock-based compensation	792				792
Net loss	(13,945)					(13,945)
Ending Balance at Mar. 31, 2021	300,199			$ 4	413,286	(113,091)
Balance, shares at Mar. 31, 2021				38,769,703
Beginning Balance at Dec. 31, 2021	$ 235,155			$ 4	424,492	(189,341)
Balance, shares at Dec. 31, 2021	38,943,110			38,943,110
Issuance of common stock upon exercise of stock options	$ 349				349
Issuance of common stock upon exercise of stock options, shares	142,391			142,391
Vesting of early exercised stock options	$ 6				6
Vesting of early exercised stock options, shares				4,311
Stock-based compensation	3,279				3,279
Net loss	(32,066)					(32,066)
Ending Balance at Mar. 31, 2022	$ 206,723			$ 4	$ 428,126	$ (221,407)
Balance, shares at Mar. 31, 2022	39,089,812			39,089,812