CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (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	32,933		32,933
Stock issued under incentive programs (in shares)		91,788
Issuance of common stock, net of issuance costs	1,230	$ 1	2,029		(800)
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	41					41
Net income (loss)	203,408			203,408
Balance ending (in shares) at Mar. 31, 2022		78,722,337
Balance ending at Mar. 31, 2022	$ 65,324	$ 787	3,566,292	(3,414,542)	(85,901)	(1,312)
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	28,647		28,647
Stock issued under incentive programs (in shares)		333,277
Issuance of common stock, net of issuance costs	543	$ 3	1,107		(567)
Foreign currency translation adjustment	3,211					3,211
Net income (loss)	$ (293,905)			(293,905)
Balance ending (in shares) at Mar. 31, 2023	86,291,473	87,139,831
Balance ending at Mar. 31, 2023	$ (895,582)	$ 871	$ 3,767,733	$ (4,569,794)	$ (91,226)	$ (3,166)