CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Thousands	Total	Convertible Preferred Stock [Member]	Common Class A [Member]	Common Class B [Member]	Additional Paid In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Common Stock [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	IPO [Member]	IPO [Member] Convertible Preferred Stock [Member]	IPO [Member] Common Class A [Member]	IPO [Member] Common Class B [Member]	IPO [Member] Additional Paid In Capital [Member]
Balance at Dec. 31, 2020		$ 366,332
Balance, Shares at Dec. 31, 2020		115,269,221
Balance at Dec. 31, 2020	$ (139,692)				$ 27,322	$ (166,979)	$ (57)	$ 22	$ 0	$ 0
Balance, Shares at Dec. 31, 2020			0	0				22,331,842
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs											$ 385,018		$ 17		$ 385,001
Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions and other offering costs, Shares													16,550,000
Conversion of redeemable convertible preferred stock to common stock												$ (366,332)
Conversion of redeemable convertible preferred stock to common stock, Shares												(115,269,221)
Conversion of redeemable convertible preferred stock to common stock											$ 366,332			$ 115	$ 366,217
Conversion of redeemable convertible preferred stock to common stock, Shares														115,269,221
Sale of Common Stock to Underwriters	0		$ 2	$ (2)
Sale of Common Stock to Underwriters, Shares			2,482,500	(2,482,500)
Reclassification of common stock, Amount	0			$ 22				$ (22)
Reclassification of Common Stock, Shares				22,707,813				(22,707,813)
Other comprehensive income (loss)	50						50
Stock-based compensation	2,867				2,867
Exercise of common stock options	549				549			$ 0
Exercise of common stock options, Shares				119				375,971
Net loss	(17,375)					(17,375)
Balance at Mar. 31, 2021		$ 0
Balance, Shares at Mar. 31, 2021		0
Balance at Mar. 31, 2021	597,749				781,956	(184,354)	(7)	$ 0	19	135
Balance, Shares at Mar. 31, 2021			19,032,500	135,494,653				0
Balance at Dec. 31, 2021	556,097				801,142	(245,161)	(40)		106	50
Balance, Shares at Dec. 31, 2021			106,420,843	49,661,126
Conversion of Class B Common Stocks to Class A Common Stocks, Value			$ 4	$ (4)
Conversion of Class B Common Stocks to Class A Common Stocks, Shares			3,650,448	(3,650,448)
Other comprehensive income (loss)	(42)						(42)
Stock-based compensation	7,924				7,924
Exercise of common stock options	$ 411		$ 0		411
Exercise of common stock options, Shares	197,527		197,527
Vested restricted stock units	$ (1,273)				(1,273)
Vested restricted stock units, Shares			150,475
Escrowed stock awards	$ 0		$ 1		(1)
Escrowed stock awards, Shares	620,877		620,877
Net loss	$ (29,495)					(29,495)
Balance at Mar. 31, 2022	$ 533,622				$ 808,203	$ (274,656)	$ (82)		$ 111	$ 46
Balance, Shares at Mar. 31, 2022			111,040,170	46,010,678