Fresh Start Accounting - Reconciliation of Enterprise Value to Estimated Reorganization Value of the Successor's Assets (Detail) - USD ($) $ in Thousands |
Mar. 31, 2017 |
Mar. 21, 2017 |
|---|---|---|
| Fresh Start Accounting [Abstract] | ||
| Enterprise value | $ 1,200,000 | |
| Plus: cash and cash equivalents | $ 32,494 | 45,123 |
| Plus: current liabilities | 82,254 | |
| Plus: noncurrent liabilities excluding long-term debt | 64,735 | |
| Reorganization value of Successor assets | $ 1,392,112 |