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Fresh Start Accounting - Cumulative Impact on Reorganizations Adjustments (Details) - USD ($) $ in Thousands | 1 Months Ended | 2 Months Ended | 11 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Nov. 19, 2020 | Nov. 19, 2020 | Nov. 18, 2020 | Dec. 31, 2019
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Gain on settlement of liabilities subject to compromise | $ 934,284 |  | $ 934,284 |  |
Interest expense |  |  | 28,014 |  |
Gain on debt discharge |  | $ 992,583 | 992,583 |  |
Professional fees incurred on the Emergence Date |  |  | (7,869) |  |
Write-off of Predecessor Credit Facility deferred financing costs |  |  | (243) |  |
Total reorganization items from reorganization adjustments |  |  | 984,471 |  |
Equity-based compensation expense for vesting of awards on Emergence Date |  |  | (13,197) |  |
Vesting of prepaid cash incentive compensation |  |  | (4,325) |  |
Income from reorganization adjustments before income taxes |  |  | 966,949 |  |
Income tax expense |  |  | (9,746) |  |
Net income from reorganization adjustments including non-controlling interests |  |  | 957,203 |  |
Less: Net income from reorganization adjustments attributable to non-controlling interests |  |  | (9,094) |  |
Net income from reorganization adjustments attributable to Oasis |  |  | 948,109 |  |
Reorganization Value, Cancellation Of Accumulated Deficit |  |  | 3,086,292 |  |
Retained earnings (accumulated deficit) | $ (49,912) | 0 | 0 | $ (3,995,209) | $ 554,446
Reorganization Adjustments |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Retained earnings (accumulated deficit) |  | $ 4,034,401 | 4,034,401 |  |
Revolving credit facility | Line of credit |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |
Interest expense |  |  | $ 30,285 |  |

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