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
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, 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