CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (Predecessor) at Dec. 31, 2015	$ (39,789)	$ 55	$ (860)	$ 1,648,687	$ (1,705,623)	$ 17,952
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) | Predecessor	(590,586)				(590,586)
Adjustment for fair value accounting of derivatives, net of tax | Predecessor	(24,025)					(24,025)
Adjustment for foreign currency translation, net of tax | Predecessor	6,073					6,073
Exercise of stock options, vesting of restricted stock and granting of stock awards | Predecessor	(731)	1		(732)
Amortization of stock compensation expense | Predecessor	11,776			11,776
Ending Balance (Predecessor) at Dec. 31, 2016	(637,282)	56	(860)	1,659,731	(2,296,209)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) | Predecessor	630,317				630,317
Adjustment for fair value accounting of derivatives, net of tax | Predecessor	0
Adjustment for foreign currency translation, net of tax | Predecessor	0
Exercise of stock options, vesting of restricted stock and granting of stock awards | Predecessor	(172)			(172)
Amortization of stock compensation expense | Predecessor	3,527			3,527
Issuance of Successor common stock and warrants	554,628	200		554,428
Ending Balance (Predecessor) at Feb. 28, 2017	(3,610)	56	(860)	1,663,086	(1,665,892)	0
Ending Balance at Feb. 28, 2017	554,628	200		554,428	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cancellation of Predecessor equity | Predecessor	3,610	(56)	$ 860	(1,663,086)	1,665,892
Net income (loss)	(266,074)				(266,074)
Adjustment for fair value accounting of derivatives, net of tax	0
Adjustment for foreign currency translation, net of tax	0
Exercise of stock options, vesting of restricted stock and granting of stock awards	(19)			(19)
Amortization of stock compensation expense	412			412
Ending Balance at Jun. 30, 2017	$ 288,947	$ 200		$ 554,821	$ (266,074)	$ 0