CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Common Stock Warrants	Additional Paid-in Capital	Accumulated Earnings (Deficit)
Beginning Balance (Predecessor) at Dec. 31, 2015	$ (171,258)	$ 4,772		$ 504,670	$ (680,700)
Beginning Balance, Shares (Predecessor) at Dec. 31, 2015		9,544,000
Stock-based compensation | Predecessor	4,660	$ 116		4,544
Stock-based compensation, Shares | Predecessor		232,000
Income tax withholdings related to equity awards | Predecessor	(313)	$ (20)		(293)
Income tax withholdings related to equity awards, Shares | Predecessor		(41,000)
Common stock issued for debt conversion | Predecessor	1,639	$ 88		1,551
Common stock issued for debt conversion, Shares | Predecessor		176,000
Common stock issued in exchange for debt | Predecessor	13,603	$ 1,385		12,218
Common stock issued in exchange for debt, Shares | Predecessor		2,771,000
Common stock warrants issued | Predecessor	15,623		$ 15,623
Common stock warrants exercised | Predecessor	13	$ 628	(9,951)	9,336
Common stock warrants exercised, Shares | Predecessor		1,256,000
Stock issuance costs | Predecessor	(102)			(102)
Net income (loss) | Predecessor	(135,134)				(135,134)
Ending Balance (Predecessor) at Dec. 31, 2016	(271,269)	$ 6,969	5,672	531,924	(815,834)
Ending Balance, shares (Predecessor) at Dec. 31, 2016		13,938,000
Stock-based compensation | Predecessor	5,923	$ 225		5,698
Stock-based compensation, Shares | Predecessor		451,000
Income tax withholdings related to equity awards | Predecessor	(312)	$ (16)		(296)
Income tax withholdings related to equity awards, Shares | Predecessor		(34,000)
Common stock issued for debt conversion | Predecessor	7,789	$ 412		7,377
Common stock issued for debt conversion, Shares | Predecessor		826,000
Common stock warrants exercised | Predecessor	$ 2	$ 124	(2,115)	1,993
Common stock warrants exercised, Shares | Predecessor	1,502,255	247,000
Net income (loss) | Predecessor	$ (111,405)				(111,405)
Ending Balance (Predecessor) at Dec. 31, 2017	(369,272)	$ 7,714	3,557	546,696	(927,239)
Ending Balance, shares (Predecessor) at Dec. 31, 2017		15,428,000
Stock-based compensation | Predecessor	3,912	$ 311		3,601
Stock-based compensation, Shares | Predecessor		623,000
Income tax withholdings related to equity awards | Predecessor	(369)	$ (26)		(343)
Income tax withholdings related to equity awards, Shares | Predecessor		(53,000)
Common stock issued for debt conversion | Predecessor	29	$ 1		28
Common stock issued for debt conversion, Shares | Predecessor		2,000
Common stock warrants exercised | Predecessor		$ 189	(3,247)	3,058
Common stock warrants exercised, Shares | Predecessor		379,000
Net income (loss) | Predecessor	(92,754)				(92,754)
Ending Balance (Predecessor) at Aug. 13, 2018	(458,454)	$ 8,189	310	553,040	(1,019,993)
Ending Balance, shares (Predecessor) at Aug. 13, 2018		16,379,000
Beginning Balance (Predecessor) at Dec. 31, 2017	$ (369,272)	$ 7,714	3,557	546,696	(927,239)
Beginning Balance, Shares (Predecessor) at Dec. 31, 2017		15,428,000
Common stock warrants exercised, Shares	402,708
Ending Balance at Dec. 31, 2018	$ 569,571	$ 52,936		452,513	64,122
Ending Balance, shares at Dec. 31, 2018		105,871,000
Successor common stock, Value	140,531	$ 8,189	310	132,032
Successor common stock, Shares		16,379,000
Vesting of equity awards	8,826	$ 514		8,312
Vesting of equity awards, Shares		1,029,000
Jones contribution	360,188	$ 44,286		315,902
Jones contribution, Shares		88,571,000
Beginning Balance (Predecessor) at Aug. 13, 2018	(458,454)	$ 8,189	310	553,040	(1,019,993)
Beginning Balance, Shares (Predecessor) at Aug. 13, 2018		16,379,000
Stock-based compensation	994	$ 207		787
Stock-based compensation, Shares		415,000
Income tax withholdings related to equity awards	(4,695)	$ (272)		(4,423)
Income tax withholdings related to equity awards, Shares		(547,000)
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)	64,122				64,122
Ending Balance at Dec. 31, 2018	$ 569,571	$ 52,936		$ 452,513	$ 64,122
Ending Balance, shares at Dec. 31, 2018		105,871,000