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Summary of Components Included in Reorganization Items (Detail) - USD ($) $ in Thousands | 4 Months Ended | 5 Months Ended
--- | --- | ---
Jul. 31, 2017 | Dec. 31, 2017
Reorganizations [Line Items] |  |
Debt, sale leaseback and other reorganization items |  | $ 1,631
Reorganization-related professional fees |  | 2,668
Loss on reorganization items |  | $ 4,299
Predecessor |  |
Reorganizations [Line Items] |  |
Gain on settlement of Liabilities subject to compromise | $ (767,640) |
Fresh start adjustments | 1,820,018 |
Debt, sale leaseback and other reorganization items | 316,504 |
Reorganization-related professional fees | 28,023 |
Loss on reorganization items | $ 1,396,905 |

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