CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Common Stock Warrants	Additional Paid-in Capital	Accumulated Earnings (Deficit)
Beginning Balance at Dec. 31, 2017	$ (369,272)	$ 7,714	$ 3,557	$ 546,696	$ (927,239)
Beginning Balance, Shares at Dec. 31, 2017		15,428,000
Stock-based compensation	1,601	$ 261		1,340
Stock-based compensation, Shares		523,000
Income tax withholdings related to equity awards	(365)	$ (26)		(339)
Income tax withholdings related to equity awards, Shares		(53,000)
Common stock warrants exercised		$ 130	(2,228)	2,098
Common stock warrants exercised, Shares		260,000
Net income (loss)	(41,886)				(41,886)
Ending Balance at Mar. 31, 2018	(409,922)	$ 8,079	1,329	549,795	(969,125)
Ending Balance, Shares at Mar. 31, 2018		16,158,000
Beginning Balance at Dec. 31, 2017	(369,272)	$ 7,714	3,557	546,696	(927,239)
Beginning Balance, Shares at Dec. 31, 2017		15,428,000
Net income (loss)	(92,754)
Ending Balance at Aug. 13, 2018	(458,454)	$ 8,189	310	553,040	(1,019,993)
Ending Balance, Shares at Aug. 13, 2018		16,379,000
Beginning Balance at Dec. 31, 2017	$ (369,272)	$ 7,714	3,557	546,696	(927,239)
Beginning Balance, Shares at Dec. 31, 2017		15,428,000
Common stock warrants exercised, Shares	246,793
Ending Balance at Sep. 30, 2018	$ 521,111	$ 52,940		454,348	13,823
Ending Balance, Shares at Sep. 30, 2018		105,879,000
Beginning Balance at Mar. 31, 2018	(409,922)	$ 8,079	1,329	549,795	(969,125)
Beginning Balance, Shares at Mar. 31, 2018		16,158,000
Stock-based compensation	1,508			1,508
Income tax withholdings related to equity awards	(4)			(4)
Common stock warrants exercised		$ 52	(888)	836
Common stock warrants exercised, Shares		103,000
Net income (loss)	(34,003)				(34,003)
Ending Balance at Jun. 30, 2018	(442,421)	$ 8,131	441	552,135	(1,003,128)
Ending Balance, Shares at Jun. 30, 2018		16,261,000
Stock-based compensation	803	$ 50		753
Stock-based compensation, Shares		100,000
Common stock warrants exercised		$ 7	(131)	124
Common stock warrants exercised, Shares		16,000
Common stock issued for debt conversions	29	$ 1		28
Common stock issued for debt conversion, Shares		2,000
Net income (loss)	(16,865)				(16,865)
Ending Balance at Aug. 13, 2018	(458,454)	$ 8,189	310	553,040	(1,019,993)
Ending Balance, Shares at Aug. 13, 2018		16,379,000
Beginning Balance at Jun. 30, 2018	(442,421)	$ 8,131	441	552,135	(1,003,128)
Beginning Balance, Shares at Jun. 30, 2018		16,261,000
Ending Balance at Sep. 30, 2018	521,111	$ 52,940		454,348	13,823
Ending Balance, Shares at Sep. 30, 2018		105,879,000
Successor common stock, Value	140,531	$ 8,189	310	132,032
Successor common stock, Shares		16,379,000
Beginning Balance at Aug. 13, 2018	(458,454)	$ 8,189	310	553,040	(1,019,993)
Beginning Balance, Shares at Aug. 13, 2018		16,379,000
Vesting of equity awards	8,826	$ 514		8,312
Vesting of equity awards, Shares		1,029,000
Stock-based compensation	329	$ 211		118
Stock-based compensation, Shares		423,000
Income tax withholdings related to equity awards	(4,695)	$ (272)		(4,423)
Income tax withholdings related to equity awards, Shares		(547,000)
Jones contribution	362,692	$ 44,286		318,406
Jones contribution, Shares		88,571,000
Stock issuance costs	(395)			(395)
Common stock warrants exercised and expired		$ 12	$ (310)	298
Common stock warrants exercised and expired, Shares		24,000
Net income (loss)	13,823				13,823
Ending Balance at Sep. 30, 2018	521,111	$ 52,940		454,348	13,823
Ending Balance, Shares at Sep. 30, 2018		105,879,000
Beginning Balance at Dec. 31, 2018	569,571	$ 52,936		452,513	64,122
Beginning Balance, Shares at Dec. 31, 2018		105,871,000
Stock-based compensation	648	$ (2)		650
Stock-based compensation, Shares		(3,000)
Net income (loss)	13,575				13,575
Ending Balance at Mar. 31, 2019	583,794	$ 52,934		453,163	77,697
Ending Balance, Shares at Mar. 31, 2019		105,868,000
Beginning Balance at Dec. 31, 2018	569,571	$ 52,936		452,513	64,122
Beginning Balance, Shares at Dec. 31, 2018		105,871,000
Net income (loss)	41,773
Ending Balance at Sep. 30, 2019	1,070,198	$ 92,762		879,669	97,767
Ending Balance, Shares at Sep. 30, 2019		185,524,000
Beginning Balance at Mar. 31, 2019	583,794	$ 52,934		453,163	77,697
Beginning Balance, Shares at Mar. 31, 2019		105,868,000
Stock-based compensation	623	$ 37		586
Stock-based compensation, Shares		74,000
Net income (loss)	21,407				21,407
Ending Balance at Jun. 30, 2019	605,824	$ 52,971		453,749	99,104
Ending Balance, Shares at Jun. 30, 2019		105,942,000
Issuance of stock	467,808	$ 39,416		428,392
Issuance of stock, Shares		78,833,000
Stock-based compensation	1,088	$ 391		697
Stock-based compensation, Shares		780,000
Income tax withholdings related to equity awards	(167)	$ (16)		(151)
Income tax withholdings related to equity awards, Shares		(31,000)
Jones contribution adjustment	(1,969)			(1,969)
Equity issuance costs	(1,049)			(1,049)
Net income (loss)	6,791				6,791
Payment of preferred dividends	(8,128)				(8,128)
Ending Balance at Sep. 30, 2019	$ 1,070,198	$ 92,762		$ 879,669	$ 97,767
Ending Balance, Shares at Sep. 30, 2019		185,524,000