CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2017	$ 268,743	$ 40	$ 349,243	$ (52,358)	$ (28,182)
Comprehensive income	98,803			98,803
Exercise of stock options and Warrants	1,910	1	1,909
Tax withholding for share-based compensation	(9,762)		(9,762)
Share-based employee compensation expense	6,097		6,097
Balance at Dec. 31, 2018	365,791	41	347,487	46,445	(28,182)
Comprehensive income	(298,912)			(286,821)		$ (12,091)
Issuance of Common Stock in connection with Merger	132,838	6	132,832
Share-based compensation Replacement Awards related to Merger and attributable to pre-combination services	9,107		9,107
Exercise of stock options	989	1	988
Tax withholding for share-based compensation	(4,733)		(4,733)
Share-based employee compensation expense	18,832		18,832
Other	(212)		(94)	(118)
Balance at Dec. 31, 2019	$ 223,700	48	504,419	(240,494)	(28,182)	(12,091)
Common stock shares beginning at Dec. 31, 2019	48,156,786
Comprehensive income	$ (228,929)			(223,631)		(5,298)
Exercise of stock options	1,025	1	1,024
Tax withholding for share-based compensation	(6,257)		(6,257)
Share-based employee compensation expense	14,077		14,077
Other	40			40
Balance at Dec. 31, 2020	$ 3,656	$ 49	$ 513,263	$ (464,085)	$ (28,182)	$ (17,389)