Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Redeemable Convertible Preferred Stock [Member]	Common Class A [Member]	Common Class A [Member] Common Stock [Member]	Common Class B [Member]
Beginning Balance, Temporary Equity, shares at Dec. 31, 2019				14,015,773
Beginning Balance, Temporary Equity Value at Dec. 31, 2019				$ 40,095
Beginning balance, shares at Dec. 31, 2019					322,007
Beginning Balance, Value at Dec. 31, 2019	$ (36,548)	$ 1,486	$ (38,034)
Issuance of Series C redeemable convertible preferred stock, net of issuance cost of $389				$ 79,611
Issuance of Series C redeemable convertible preferred stock, net of issuance cost of $389, shares				135,180,800
Issuance of Series C redeemable convertible preferred stock upon extinguishment of convertible notes	5,736			$ 6,749
Issuance of Series C redeemable convertible preferred stock for license upon extinguishment of convertible notes				11,404,246
Issuance of Series C redeemable convertible preferred stock for license	13,121			$ 13,121
Issuance of Series C redeemable convertible preferred stock for license, share				22,171,553
Issuance of Class A common stock upon exercise of options	282	282
Issuance of Class A common stock upon exercise of options, shares					33,289
Stock-based compensation	331	331
Net loss	(53,413)		(53,413)
Ending Balance, shares at Dec. 31, 2020					355,296
Ending Balance, Value at Dec. 31, 2020	$ (89,348)	2,099	(91,447)
Ending Balance, Temporary Equity , shares at Dec. 31, 2020	182,772,372			182,772,372
Ending Balance, Temporary Equity Value at Dec. 31, 2020				$ 139,576
Stock shares issued during the period value	$ 48,411	48,406			$ 5
Stock shares issued during the period new issues shares					5,002,500
Conversion of preferred stock into common stock	139,576	139,560		$ (139,576)	$ 16
Conversion of preferred stock into common stock, Shares				(182,772,372)	15,464,775		309,238
Issuance of Class A common stock upon exercise of options	550	550
Issuance of Class A common stock upon exercise of options, shares					145,805
Stock-based compensation	3,012	3,012
Net loss	(32,609)		(32,609)
Ending Balance, shares at Dec. 31, 2021					20,968,376		309,238
Ending Balance, Value at Dec. 31, 2021	$ 69,592	$ 193,627	$ (124,056)			$ 21
Ending Balance, Temporary Equity , shares at Dec. 31, 2021	0