CONSOLIDATED STATEMENTS OF SHAREHOLDERS' (DEFICIT) EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid in Capital	Contingently Issuable Common Stock	Accumulated Other Comprehensive Income	Accumulated Deficit
Beginning balances (in shares) at Dec. 31, 2020		48,943,082
Beginning balance at Dec. 31, 2020	$ 120,785	$ 5	$ 395,491	$ 17,600	$ 0	$ (292,311)
Increase (decrease) in stockholders' equity [Roll Forward]
Release of restricted stock units (in shares)		859,000
Issuance of earnout shares (in shares)		1,999,185
Issuance of earnout shares	0		17,600	(17,600)
Stock-based compensation	$ 15,058		15,058
Exercise of options (in shares)	123,837	123,837
Exercise of options	$ 1,074		1,074
Exercise of warrants (in shares)		1,747,746
Exercise of warrants	20,099		20,099
Release of restricted stock units (in shares)		154,600
Cancellation of shares used to settle payroll tax withholding (in shares)		(40,818)
Cancellation of shares used to settle payroll tax withholding	(353)		(353)
Foreign currency translation adjustment, net of tax	0
Net loss	$ (124,216)					(124,216)
Ending balances (in shares) at Dec. 31, 2021	53,786,632	53,786,632
Ending balance at Dec. 31, 2021	$ 32,447	$ 5	448,969	0	0	(416,527)
Increase (decrease) in stockholders' equity [Roll Forward]
Release of restricted stock units (in shares)		704,178
Stock-based compensation	13,794		13,794
Exercise of warrants (in shares)		600
Exercise of warrants	7		7
Cancellation of shares used to settle payroll tax withholding (in shares)		(203,951)
Cancellation of shares used to settle payroll tax withholding	(978)		(978)
Issuance of common stock under June 2022 Promissory Note (in shares)		3,393,663
Issuance of common stock under June 2022 Promissory Note	7,535	$ 1	7,534
Issuance of common stock under ATM program (in shares)		20,539,603
Issuance of common stock under ATM program	38,626	$ 2	38,624
Issuance of common stock under SEPA (in shares)		3,967,939
Issuance of common stock under SEPA	4,604	$ 1	4,603
Commitment fee for SEPA settled by common stock (in shares)		465,117
Commitment fee for SEPA settled by common stock	1,061		1,061
Foreign currency translation adjustment, net of tax	6				6
Net loss	$ (229,813)					(229,813)
Ending balances (in shares) at Dec. 31, 2022	82,653,781	82,653,781
Ending balance at Dec. 31, 2022	$ (132,711)	$ 9	$ 513,614	$ 0	$ 6	$ (646,340)