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Acquisitions and Divestitures of Oil and Gas Properties - Divestitures (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 01, 2018 USD ($) well shares | Jan. 31, 2016 USD ($) | Dec. 31, 2016 USD ($) | Oct. 01, 2016 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Successor |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
ARO liabilities settled or disposed |  |  | $ 540 |  | $ 31,967 | $ 11,308
Payments for contract settlement |  |  | 0 |  | 0 | 0
Loss on termination of the gathering contract |  |  | 0 |  | 0 | 0
Revisions in estimated cash flows |  |  | $ (12,397) |  | (870) | 28,565
Predecessor |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
ARO liabilities settled or disposed |  |  |  | $ 36,979 |  |
Payments for contract settlement |  |  |  | 11,000 |  |
Loss on termination of the gathering contract |  |  |  | 90,184 |  |
Revisions in estimated cash flows |  |  |  | $ 0 |  |
Predecessor | WTO Properties | Treating Agreement |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Revisions in estimated cash flows |  | $ 34,100 |  |  |  |
Disposal Group, Not Discontinued Operations | Successor | Central Basin Platform |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of common units sold (in shares) | shares | 13,125,000 |  |  |  |  |
Percent of common equity sold | 25.00% |  |  |  |  |
Proceeds from sale of oil and natural gas properties | $ 14,500 |  |  |  |  |
ARO liabilities settled or disposed | $ 26,900 |  |  |  | $ 26,900 |
Number of wells sold | well | 1,066 |  |  |  |  |
Disposal Group, Not Discontinued Operations | Successor | Oil and Gas Properties |  |  |  |  |  |
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
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations | Predecessor | WTO Properties |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Payments for contract settlement |  | $ 11,000 |  |  |  |
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations | Predecessor | WTO Properties | Treating Agreement |  |  |  |  |  |
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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