Condensed Statements Of Redeemable Convertible Preferred Stock And Shareholders' Equity - USD ($) $ in Thousands		Total	Common Stock		Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Redeemable Convertible Preferred Stock Preferred Stock
Beginning balance at Dec. 31, 2020		$ (414,447)	$ 1		$ 6,601	$ 884	$ (421,933)	$ 353,692
Beginning balance (in shares) at Dec. 31, 2020			21,416,436	[1]				51,518,255
Issuance of common stock under stock plan		423			423
Issuance of common stock under stock plan, Shares	[1]		391,372
Stock-based compensation		878			878
Foreign currency translation adjustments		(4)				(4)
Issuance of Series C redeemable convertible preferred stock (net of issuance costs), Shares								1,362,099
Issuance of Series C redeemable convertible preferred stock (net of issuance costs)								$ 15,000
Debt extinguishment of convertible loan		36,782			36,782
Net income (loss)		(39,466)					(39,466)
Ending balance at Mar. 31, 2021		(415,834)	$ 1		44,684	880	(461,399)	$ 368,692
Ending balance (in shares) at Mar. 31, 2021			21,807,808	[1]				52,880,354
Beginning balance at Dec. 31, 2021		92,336	$ 12		734,142	724	(642,542)
Beginning balance (in shares) at Dec. 31, 2021	[1]		119,624,679
Issuance of common stock under stock plan		118			118
Issuance of common stock under stock plan, Shares	[1]		444,586
Issuance of common stock upon exercise of warrants, shares	[1]		42,413
Stock-based compensation		5,121			5,121
Withholding taxes from stock plan		(473)			(473)
Foreign currency translation adjustments		(202)				(202)
Net income (loss)		(55,245)					(55,245)
Ending balance at Mar. 31, 2022		$ 41,655	$ 12		$ 738,908	$ 522	$ (697,787)
Ending balance (in shares) at Mar. 31, 2022	[1]		120,111,678

[1] (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 to reflect the exchange ratio of approximately 0.34456 established in the Merger as described in Note 3