CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($) $ in Thousands		Total	Redeemable Convertible Preferred Stock		Common Stock		Additional Paid-in- Capital	Accumulated Deficit	Accumulated other comprehensive loss
Beginning balance (in shares) at Dec. 31, 2020	[1]		88,434,754
Beginning balance at Dec. 31, 2020			$ 39,225
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of redeemable convertible preferred stock upon exercise of warrant (in shares)	[1]		4,232,947
Issuance of redeemable convertible preferred stock upon exercise of warrants			$ 58,097
Conversion of redeemable convertible preferred stock to common stock (in shares)	[1]		(92,667,701)
Conversion of redeemable convertible preferred stock to common stock			$ (97,322)
Ending balance (in shares) at Mar. 31, 2021	[1]		0
Ending balance at Mar. 31, 2021			$ 0
Beginning balance (in shares) at Dec. 31, 2020	[1]				33,327,294
Beginning balance at Dec. 31, 2020		$ (75,907)			$ 0		$ 133,468	$ (209,375)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	[1]	727,114
Issuance of common stock upon exercise of stock options		$ 190			$ 1		189
Repurchase of common stock (shares)	[1]				(220,561)
Repurchase of common stock		(43)					(43)
Stock-based compensation expense		5,256					5,256
Vesting of early exercised stock options		438					438
Net loss		(20,957)						(20,957)
Conversion of redeemable convertible preferred stock to common stock (in shares)	[1]				92,667,701
Conversion of redeemable convertible preferred stock to common stock		97,334			$ 12		97,322
Issuance of common stock upon merger and private offering, net of acquired private placement warrants of $19,377 (in shares)	[1]				34,947,657
Issuance of common stock upon merger and private offering, net of acquired private placement warrants of $19,377		272,064			$ 3		272,061
Offering costs in connection with the merger		(26,620)					(26,620)
Ending balance (in shares) at Mar. 31, 2021	[1]				161,449,205
Ending balance at Mar. 31, 2021		$ 251,755			$ 16		482,071	(230,332)	0
Beginning balance (in shares) at Dec. 31, 2021		0	0	[1]
Beginning balance at Dec. 31, 2021		$ 0	$ 0
Ending balance (in shares) at Mar. 31, 2022		0	0	[1]
Ending balance at Mar. 31, 2022		$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2021		172,200,417			172,200,417	[1]
Beginning balance at Dec. 31, 2021		$ 260,700			$ 17		564,045	(303,356)	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		797,380			822,702	[1]
Issuance of common stock upon exercise of stock options		$ 209			$ 0		209
Issuance of common stock upon exercise of restricted stock awards - net of tax withholding (in shares)	[1]				812,491
Issuance of common stock upon exercise of restricted stock awards - net of tax withholding		(59)			$ 0		(59)
Repurchase of common stock (shares)	[1]				(233,107)
Repurchase of common stock		(31)					(31)
Stock-based compensation expense		8,750					8,750
Vesting of early exercised stock options		19					19
Net loss		(32,397)						(32,397)
Other Comprehensive loss		$ (12)
Ending balance (in shares) at Mar. 31, 2022		173,602,503			173,602,503	[1]
Ending balance at Mar. 31, 2022		$ 237,179			$ 17		$ 572,933	$ (335,753)	$ (18)

[1] The shares of the Company’s common and redeemable convertible preferred stock, prior to the Merger (as defined in Note 1), have been retroactively restated as shares reflecting the exchange ratio of approximately 0.703 established in the Merger as described in Note 1.