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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Thousands			3 Months Ended								9 Months Ended	12 Months Ended
	Oct. 01, 2016	Jan. 21, 2016	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Oct. 01, 2016	Dec. 31, 2017	Dec. 31, 2015
Successor
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payment of certain contract cures and other							$ 0					$ 0
Loss on termination of the gathering contract							0					0
Revisions in estimated cash flows							12,397					(28,565)
Revenues			$ 93,206	$ 80,892	$ 84,851	$ 98,350	98,456					357,299
Expenses							$ 434,801					317,668
Successor | Oil and Gas Properties | Disposal Group, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and natural gas properties												$ 17,100
Predecessor
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payment of certain contract cures and other											$ 11,000		$ 24,889
Loss on termination of the gathering contract										$ 89,100	90,184		50,976
Revisions in estimated cash flows											0		44,060
Revenues	$ 0							$ 104,056	$ 99,421	$ 90,332	293,809		768,709
Expenses											$ 1,200,012		$ 5,411,387
Predecessor | WTO Properties | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payment of certain contract cures and other		$ 11,000
Predecessor | Treating Agreement | WTO Properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revisions in estimated cash flows		$ (34,100)
Predecessor | Treating Agreement | WTO Properties | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contract agreement, term		30 years
Cumulative shortfall accrued		$ 111,900
Loss on termination of the gathering contract		$ 89,100

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Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

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The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

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