Fair Value Measurements (Gross Amounts and Fair Value of Debt) (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| First lien term loan | ||
| Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items] | ||
| Carrying value | $ 1,838,940 | $ 1,903,875 |
| First lien term loan | Significant Other Observable Inputs (Level 2) | ||
| Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items] | ||
| Fair value — Level 2 | 1,360,816 | 1,856,278 |
| 7.75% Senior Notes | ||
| Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items] | ||
| Carrying value | 610,000 | 610,000 |
| 7.75% Senior Notes | Significant Other Observable Inputs (Level 2) | ||
| Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items] | ||
| Fair value — Level 2 | $ 204,350 | $ 617,625 |