Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity/Deficit (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated deficit	Series A Preferred Stock	Series B Preferred Stock
Beginning balance at Dec. 31, 2019	$ (36,088)	$ 1		$ (224)	$ (35,865)
Temporary equity, beginning balance (in shares) at Dec. 31, 2019						6,167,726	20,942,781
Temporary equity, beginning balance at Dec. 31, 2019						$ 5,353	$ 46,404
Beginning balance (in shares) at Dec. 31, 2019		256,548
Issuance of Preferred Stock							$ 125,026
Issuance of Preferred Stock (in shares)							44,453,477
Settlement of preferred stock tranche right	4,135		$ 4,135
Accretion of Series B and B-2 Preferred Stock to redemption value	(1,195)		(1,195)				$ 1,195
Stock-based compensation	186		186
Currency translation adjustment	(317)			(317)
Net loss	(5,247)				(5,247)
Ending balance at Mar. 31, 2020	(38,526)	$ 1	3,126	(541)	(41,112)
Temporary equity, ending balance (in shares) at Mar. 31, 2020						6,167,726	65,396,258
Temporary equity, ending balance at Mar. 31, 2020						$ 5,353	$ 172,625
Ending balance (in shares) at Mar. 31, 2020		256,548
Beginning balance at Dec. 31, 2020	323,197	$ 35	396,443	617	(73,898)
Beginning balance (in shares) at Dec. 31, 2020		35,044,758
Stock-based compensation	2,584		2,584
Common stock issued upon exercises of options	$ 667		667
Common stock issued upon exercises of options (in shares)	56,241	56,241
Currency translation adjustment	$ (305)			(305)
Net loss	(13,534)				(13,534)
Ending balance at Mar. 31, 2021	$ 312,609	$ 35	$ 399,694	$ 312	$ (87,432)
Ending balance (in shares) at Mar. 31, 2021		35,100,999