Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Class 1 Common Stock	Class 2 Common Stock	Previously Reported	Revision of Prior Period, Adjustment	Common Stock Class 1 Common Stock	Common Stock Class 2 Common Stock	Common Stock Previously Reported Class 1 Common Stock	Common Stock Previously Reported Class 2 Common Stock	Common Stock Revision of Prior Period, Adjustment Class 1 Common Stock	Common Stock Revision of Prior Period, Adjustment Class 2 Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Previously Reported	Additional Paid-in Capital Revision of Prior Period, Adjustment	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Deficit Previously Reported	Accumulated Deficit Revision of Prior Period, Adjustment	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Previously Reported
Beginning balance (shares) at Dec. 31, 2018	0				68,383,000	(68,383,000)
Beginning balance at Dec. 31, 2018	$ 0				$ 141,676	$ (141,676)
Ending balance (shares) at Dec. 31, 2019	0
Ending balance at Dec. 31, 2019	$ 0
Beginning balance (shares) at Dec. 31, 2018							89,953,000	8,197,000	29,767,000	0	60,186,000	8,197,000
Beginning balance at Dec. 31, 2018	34,120	$ 1,908			$ (107,556)	$ 141,676	$ 9	$ 1	$ 5	$ 0	$ 4	$ 1	$ 141,065	$ 8,692	$ 132,373	$ (106,955)	$ 1,908	$ (116,253)	$ 9,298	$ 0	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	2,114												2,114
Issuance of common stock under stock plans (shares)							1,467,000
Issuance of common stock under stock plans	1,127												1,127
Foreign currency translation	0
Net loss	(22,803)															(22,803)
Ending balance (shares) at Dec. 31, 2019							91,420,000	8,197,000
Ending balance at Dec. 31, 2019	$ 16,466						$ 9	$ 1					144,306			(127,850)				0
Ending balance (shares) at Dec. 31, 2020	0
Ending balance at Dec. 31, 2020	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	3,063												3,063
Issuance of common stock under stock plans (shares)							1,340,000
Issuance of common stock under stock plans	1,308												1,308
Foreign currency translation	0
Net loss	(17,027)															(17,027)
Ending balance (shares) at Dec. 31, 2020			92,760,000	8,197,000			92,760,000	8,197,000
Ending balance at Dec. 31, 2020	$ 3,810						$ 9	$ 1					148,677			(144,877)				0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-02 [Member]
Ending balance (shares) at Dec. 31, 2021	0
Ending balance at Dec. 31, 2021	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reverse recapitalization and PIPE Financing (shares)							44,522,000	(1,659,000)
Reverse recapitalization and PIPE financing	329,886						$ 5						329,881
Fair value of Earnout Shares	(230,995)												(230,995)
Issuance and vesting of Earnout Shares (shares)							10,204,000	713,000
Issuance and vesting of Earnout Shares	237,009						$ 1						237,008
Stock-based compensation expense	26,151												26,151
Issuance of common stock under stock plans (shares)							4,323,000
Issuance of common stock under stock plans	6,227												6,227
Shares issued for exercise of warrants (shares)							3,000
Shares issued for exercise of warrants	38												38
Shares exchanged in connection with Secondary Offering (shares)							2,028,000	(2,028,000)
Warrant Exchange (shares)							3,746,000
Exchange of shares (shares)							1,827,000	(1,827,000)
Foreign currency translation	(1,292)																			(1,292)
Net loss	(61,200)															(61,200)
Ending balance (shares) at Dec. 31, 2021			159,413,000	3,396,000			159,413,000	3,396,000
Ending balance at Dec. 31, 2021	$ 309,634						$ 15	$ 1					$ 516,987			$ (206,077)				$ (1,292)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reverse recapitalization and PIPE Financing (shares)	41,492,000
Shares exchanged in connection with Secondary Offering (shares)	20,000,000
Ending balance (shares) at Jan. 12, 2021	145,266,000		138,728,373	6,537,735