Long-Term Debt - Schedule of Reconciliation of Interest Expense (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Debt Disclosure [Abstract] | ||||
| Interest and commitment fees incurred | $ 16,854 | $ 19,144 | $ 53,356 | $ 55,682 |
| Capitalized interest, commitment fees, and letter of credit fees | 0 | (2,083) | 0 | (5,656) |
| Amortization of debt discount/premium, net | 1,073 | 830 | 3,147 | 798 |
| Amortization of financing costs | 1,745 | 1,916 | 5,242 | 5,581 |
| Other interest | 126 | 134 | 389 | 397 |
| Interest expense | $ 19,798 | $ 19,941 | $ 62,134 | $ 56,802 |