Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands |
|
12 Months Ended |
|
|
Mar. 21, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
| Plan of Reorganization |
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
|
| Senior Notes and associated accrued interest |
$ 1,267,410
|
|
|
|
| General unsecured claims |
2,439
|
|
|
|
| Predecessor |
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
|
| Valuation allowance, Deferred tax asset, Increase (Decrease) |
|
$ 163,191
|
|
|
| Estimated valuation allowance |
|
$ 574,338
|
$ 411,147
|
$ 411,147
|
| Discrete item associated with Federal and State NOL carryforwards |
|
|
|
$ 126,000
|
| Purchase or sale of stock percentage |
|
5.00%
|
|
|
| Offering stock period |
|
3 years
|
|
|
| Possible ownership change, evaluation period |
|
2 years
|
|
|
| Senior Notes and associated accrued interest |
1,267,410
|
$ 1,267,410
|
|
|
| Cancellation of indebtedness income, realized |
0
|
|
|
|
| Predecessor | Minimum |
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
|
| Changes in beneficial ownership percentage |
|
50.00%
|
|
|
| Predecessor | Plan of Reorganization |
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
|
| Senior Notes and associated accrued interest |
1,267,410
|
|
|
|
| General unsecured claims |
$ 2,981
|
|
|
|
| Predecessor | State and Local Jurisdiction |
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
|
| Operating loss carryforwards |
|
$ 844,000
|
|
|
| Internal Revenue Service (IRS) | Predecessor |
|
|
|
|
| Income Tax Disclosure [Line Items] |
|
|
|
|
| Operating loss carryforwards |
|
689,000
|
|
|
| Operating loss carryforwards, not subject to expiration |
|
$ 12,000
|
|
|