CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional paid-in capital	Treasury stock	Accumulated other comprehensive loss	Accumulated deficit	Public Offering
Balance at Dec. 31, 2021	$ 80,674	$ 10	$ 892,828	$ (25,097)	$ (6,036)	$ (781,031)
Balance, shares at Dec. 31, 2021		99,537
Stock-based compensation	7,730		7,730
Sales agent equity incentives	2,178		2,178
Sales agent equity incentives, shares		199
Common stock issued for warrant exercises	1,289		1,289
Common stock issued for warrant exercises, shares		551
Common stock issued for stock option exercises	140		140
Common stock issued for stock option exercises, shares		39
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(4,751)		(4,751)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		852
Foreign currency translation adjustments	(1,204)				(1,204)
Net loss	(42,616)					(42,616)
Balance at Mar. 31, 2022	43,440	$ 10	899,414	(25,097)	(7,240)	(823,647)
Balance, shares at Mar. 31, 2022		101,178
Balance at Dec. 31, 2021	80,674	$ 10	892,828	(25,097)	(6,036)	(781,031)
Balance, shares at Dec. 31, 2021		99,537
Foreign currency translation adjustments	(11,550)
Net loss	(116,510)
Balance at Sep. 30, 2022	(20,894)	$ 11	919,319	(25,097)	(17,586)	(897,541)
Balance, shares at Sep. 30, 2022		104,984
Balance at Mar. 31, 2022	43,440	$ 10	899,414	(25,097)	(7,240)	(823,647)
Balance, shares at Mar. 31, 2022		101,178
Stock-based compensation	10,109		10,109
Sales agent equity incentives	361		361
Sales agent equity incentives, shares		20
Common stock issued for conversion of Series A preferred stock		29
Common stock issued for warrant exercises	2,675	$ 1	2,674
Common stock issued for warrant exercises, shares		1,914
Common stock issued for employee stock purchase plan and stock option exercises, shares		535
Common stock issued for employee stock purchase plan and stock option exercises	2,331		2,331
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(4,562)		(4,562)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		819
Common stock issued for asset acquisition	250		250
Common stock issued for asset acquisition, shares		23
Foreign currency translation adjustments	(5,388)				(5,388)
Net loss	(37,101)					(37,101)
Balance at Jun. 30, 2022	12,115	$ 11	910,577	(25,097)	(12,628)	(860,748)
Balance, shares at Jun. 30, 2022		104,518
Stock-based compensation	10,011		10,011
Sales agent equity incentives	178		178
Common stock issued for warrant exercises	196		196
Common stock issued for warrant exercises, shares		49
Common stock issued for employee stock purchase plan and stock option exercises, shares		11
Common stock issued for employee stock purchase plan and stock option exercises	47		47
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(1,690)		(1,690)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		406
Foreign currency translation adjustments	(4,958)				(4,958)
Net loss	(36,793)					(36,793)
Balance at Sep. 30, 2022	(20,894)	$ 11	919,319	(25,097)	(17,586)	(897,541)
Balance, shares at Sep. 30, 2022		104,984
Balance at Dec. 31, 2022	(34,667)	$ 11	933,537	(25,097)	(10,794)	(932,324)
Balance, shares at Dec. 31, 2022		106,640
Stock-based compensation	16,462		16,462
Common stock issued for warrant exercises	457	$ 1	456
Common stock issued for warrant exercises, shares		4,443
Common stock issued for stock option exercises	768		768
Common stock issued for stock option exercises, shares		349
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(2,331)		(2,331)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		2,027
Reclassification of equity-based liability	3,373		3,373
Foreign currency translation adjustments	1,105				1,105
Net loss	(43,529)					(43,529)
Balance at Mar. 31, 2023	(58,362)	$ 12	952,265	(25,097)	(9,689)	(975,853)
Balance, shares at Mar. 31, 2023		113,459
Balance at Dec. 31, 2022	(34,667)	$ 11	933,537	(25,097)	(10,794)	(932,324)
Balance, shares at Dec. 31, 2022		106,640
Foreign currency translation adjustments	(1,317)
Net loss	(137,560)
Balance at Sep. 30, 2023	(44,161)	$ 12	1,062,919	(25,097)	(12,111)	(1,069,884)
Balance, shares at Sep. 30, 2023		123,311
Balance at Mar. 31, 2023	(58,362)	$ 12	952,265	(25,097)	(9,689)	(975,853)
Balance, shares at Mar. 31, 2023		113,459
Stock-based compensation	24,194		24,194
Common stock issued for warrant exercises	172		$ 172
Common stock issued for warrant exercises, shares		1,121
Common stock issued for employee stock purchase plan and stock option exercises, shares		274	2,277
Common stock issued for employee stock purchase plan and stock option exercises	$ 2,277
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares	(2,934)	2,711	(2,934)
Common stock offering, net of offering costs			$ 57,511				$ 57,511
Common stock offering, net of offering costs, shares		4,286
Reclassification of equity-based liability	$ 188		188
Foreign currency translation adjustments	178				178
Net loss	(51,377)					(51,377)
Balance at Jun. 30, 2023	(28,153)	$ 12	1,033,673	(25,097)	(9,511)	(1,027,230)
Balance, shares at Jun. 30, 2023		121,851
Stock-based compensation	20,073		20,073
Common stock issued for stock option exercises	38		38
Common stock issued for stock option exercises, shares		8
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(782)		(782)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		784
Common stock offering, net of offering costs	9,917		9,917
Common stock offering, net of offering costs, shares		668
Foreign currency translation adjustments	(2,600)				(2,600)
Net loss	(42,654)					(42,654)
Balance at Sep. 30, 2023	$ (44,161)	$ 12	$ 1,062,919	$ (25,097)	$ (12,111)	$ (1,069,884)
Balance, shares at Sep. 30, 2023		123,311