Consolidated Statements of Stockholders' Equity - Successor [Member] - USD ($) $ in Thousands	Total	Retained Earnings/Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Common Stock Held in Treasury, at Cost [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2016	$ 1,978,024	$ 1,557,681	$ (38,990)	$ 0	$ 452	$ 195,267	$ (496)	$ 264,110
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	(40,513)	(118,331)	77,818	0	0	0	0	0
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification \| Accounting Standards Update 2016-09 [Member]	(137)	(137)	0	0	0	0	0	0
Stock-based compensation	2,385	0	0	0	0	2,385	0	0
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(1,547)	(1,572)	0	0	0	0	25	0
Stock Issued During Period, Value, New Issues	1	0	0	0	1	0	0	0
Ending balance at Jun. 30, 2017	1,938,213	1,437,641	38,828	0	453	197,652	(471)	264,110
Beginning balance at Dec. 31, 2017	1,645,258	1,233,845	(52,239)	0	453	199,560	(471)	264,110
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	411,010	310,017	100,993	0	0	0	0	0
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification \| Accounting Standards Update 2016-09 [Member]	0
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification \| Accounting Standards Update 2016-01 [Member]		2,900	(2,900)	0	0	0	0	0
Stock-based compensation	8,765	0	0	0	0	8,765	0	0
Warrant Exercised During Period Value	3	0	0	0	0	3	0	0
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(1,116)	(1,060)	0	0	0	0	(56)	0
Stock Issued During Period, Value, New Issues	1	0	0	0	1	0	0	0
Proceeds from warrant exercises	3
Payments for Repurchase of Warrants	8,092
Ending balance at Jun. 30, 2018	$ 2,063,921	$ 1,545,702	$ 45,854	$ 0	$ 454	$ 208,328	$ (527)	$ 264,110

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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