Debt (Pre-emergence Debt) (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Predecessor | Senior Notes | |||
| Debt Instrument [Line Items] | |||
| Amortization of senior note debt issuance costs | $ 602 | $ 1,921 | $ 2,335 |