CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Loss
Balance beginning (in shares) at Dec. 31, 2021		76,433,151
Balance beginning at Dec. 31, 2021	$ (351,673)	$ 764	$ 3,351,967	$ (3,617,950)	$ (85,101)	$ (1,353)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	104,367		104,367
Stock issued under incentive programs (in shares)		573,960
Stock issued under incentive programs	67	$ 6	4,900		(4,839)
Issuance of common stock, net of issuance costs (in shares)		2,197,398
Issuance of common stock, net of issuance costs	179,385	$ 22	179,363
Foreign currency translation adjustment	(22,441)					(22,441)
Net loss	(475,690)			(475,690)
Balance ending (in shares) at Sep. 30, 2022		79,204,509
Balance ending at Sep. 30, 2022	(565,985)	$ 792	3,640,597	(4,093,640)	(89,940)	(23,794)
Balance beginning (in shares) at Jun. 30, 2022		78,776,234
Balance beginning at Jun. 30, 2022	(416,950)	$ 788	3,604,614	(3,925,027)	(86,455)	(10,870)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	33,386		33,386
Stock issued under incentive programs (in shares)		428,275
Stock issued under incentive programs	(884)	$ 4	2,597		(3,485)
Foreign currency translation adjustment	(12,924)					(12,924)
Net loss	(168,613)			(168,613)
Balance ending (in shares) at Sep. 30, 2022		79,204,509
Balance ending at Sep. 30, 2022	$ (565,985)	$ 792	3,640,597	(4,093,640)	(89,940)	(23,794)
Balance beginning (in shares) at Dec. 31, 2022	86,039,923	86,806,554
Balance beginning at Dec. 31, 2022	$ (634,078)	$ 868	3,737,979	(4,275,889)	(90,659)	(6,377)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	70,193		70,193
Stock issued under incentive programs (in shares)		605,571
Stock issued under incentive programs	699	$ 6	1,740		(1,047)
Issuance of common stock, net of issuance costs (in shares)		32,229,542
Issuance of common stock, net of issuance costs	256,995	$ 322	256,673
Foreign currency translation adjustment	(5,486)					(5,486)
Net loss	$ (366,673)			(366,673)
Balance ending (in shares) at Sep. 30, 2023	118,730,398	119,641,667
Balance ending at Sep. 30, 2023	$ (678,350)	$ 1,196	4,066,585	(4,642,562)	(91,706)	(11,863)
Balance beginning (in shares) at Jun. 30, 2023		95,183,750
Balance beginning at Jun. 30, 2023	(754,519)	$ 952	3,855,916	(4,511,786)	(91,424)	(8,177)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	21,254		21,254
Stock issued under incentive programs (in shares)		176,329
Stock issued under incentive programs	354	$ 2	634		(282)
Issuance of common stock, net of issuance costs (in shares)		24,281,588
Issuance of common stock, net of issuance costs	189,023	$ 242	188,781
Foreign currency translation adjustment	(3,686)					(3,686)
Net loss	$ (130,776)			(130,776)
Balance ending (in shares) at Sep. 30, 2023	118,730,398	119,641,667
Balance ending at Sep. 30, 2023	$ (678,350)	$ 1,196	$ 4,066,585	$ (4,642,562)	$ (91,706)	$ (11,863)