Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Redeemable Convertible Preferred Stock
Beginning balance at Dec. 31, 2020	$ (272,102)		$ 3	$ 124,755	$ 187	$ (397,047)
Beginning balance, shares at Dec. 31, 2020								85,331,278
Beginning balance at Dec. 31, 2020								$ 727,474
Beginning balance, shares at Dec. 31, 2020			30,707,113
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member					us-gaap:AccountingStandardsUpdate201613Member
Exercise of stock options	11,038			11,038
Exercise of stock options, shares			1,264,484
Stock-based compensation	9,710			9,710
Stock-based compensation								$ 676
Foreign currency translation adjustment	(24)				(24)
Net loss	(13,732)					(13,732)
Ending balance at Mar. 31, 2021	(265,110)		$ 3	145,503	163	(410,779)
Ending balance, shares at Mar. 31, 2021								85,331,278
Ending balance at Mar. 31, 2021								$ 728,150
Ending balance, shares at Mar. 31, 2021			31,971,597
Beginning balance at Dec. 31, 2021	1,189,289		$ 13	1,852,071	(583)	(662,212)
Beginning balance, shares at Dec. 31, 2021			134,046,926
Exercise of stock options	$ 6,795			6,795
Exercise of stock options, shares	697,998		697,998
Stock-based compensation	$ 39,375			39,375
Issuance of common stock upon settlement of restricted stock units			706,663
Foreign currency translation adjustment	345				345
Net loss	(71,419)					(71,419)
Ending balance at Mar. 31, 2022	$ 1,164,385		$ 13	$ 1,898,241	$ (238)	$ (733,631)
Ending balance, shares at Mar. 31, 2022			135,451,587