CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Series A-1 Redeemable Convertible Preferred Stock	Series A-2 Redeemable Convertible Preferred Stock	Series B Redeemable Convertible Preferred Stock
Beginning Balance at Dec. 31, 2019	$ (17,429)		$ 458	$ (17,887)
Beginning Balance, Shares at Dec. 31, 2019		119,936
Beginning Balance at Dec. 31, 2019					$ 2	$ 25,067
Beginning Balance, Shares at Dec. 31, 2019					20,000,000	62,819,866
Issuance of redeemable convertible preferred stock						$ 17,719	$ 64,548
Issuance of redeemable convertible preferred stock, Shares						44,375,000	124,519,220
Issuance of common stock upon exercise of stock options	359	$ 1	358
Issuance of common stock upon exercise of stock options, Shares		385,138
Stock-based compensation expense	1,342		1,342
Net loss	(43,337)			(43,337)
Ending Balance at Dec. 31, 2020	$ (59,065)	$ 1	2,158	(61,224)
Ending Balance, Shares at Dec. 31, 2020	505,074	505,074
Ending Balance at Dec. 31, 2020	$ 107,336				$ 2	$ 42,786	$ 64,548
Ending Balance, Shares at Dec. 31, 2020	251,714,086				20,000,000	107,194,866	124,519,220
Issuance of redeemable convertible preferred stock							$ 45,375
Issuance of redeemable convertible preferred stock, Shares							87,259,605
Conversion of redeemable convertible preferred stock into common stock upon closing of initial public offering					$ (2)	$ (42,786)	$ (109,923)
Conversion of redeemable convertible preferred stock into common stock upon closing of initial public offering, Shares					(20,000,000)	(107,194,866)	(211,778,825)
Conversion of redeemable convertible preferred stock into common stock upon closing of initial public offering	$ 152,711	$ 2	152,709
Conversion of redeemable convertible preferred stock into common stock upon closing of initial public offering, Shares		24,924,501
Issuance of common shares upon closing of initial public offering, net of offering costs and underwriter fees of $17,132	186,308	$ 1	186,307
Issuance of common shares upon closing of initial public offering, net of offering costs and underwriter fees, Shares		11,302,219
Issuance of common stock upon vesting and exercise of stock options	894		894
Issuance of common stock upon vesting and exercise of stock options, Shares		442,947
Stock-based compensation expense	4,314		4,314
Net loss	(68,899)			(68,899)
Ending Balance at Dec. 31, 2021	$ 216,263	$ 4	$ 346,382	$ (130,123)
Ending Balance, Shares at Dec. 31, 2021	37,174,741	37,174,741
Ending Balance, Shares at Dec. 31, 2021					0	0	0