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Long-Term Debt and Short-Term Debt - Summary of Long-Term Debt and Short-Term Debt (Parenthetical) (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Senior Notes Due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 250,000,000 | $ 250,000,000
Interest rate | 10.25% | 10.25%
Debt maturity date | Nov. 01, 2020 | Nov. 01, 2020
Debt discount | $ 0 | $ 0
Debt issuance costs | 5,700,000 | 5,900,000
Senior Secured Term Loan B [Member] |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 575,000,000 | $ 575,000,000
Interest rate | 0.63% | 0.61%
Applicable margin | 4.75% |
Interest bearing rate | 1.00% |
LIBOR Period | 3 months |
Debt maturity date | Oct. 19, 2022 | Oct. 19, 2022
Debt discount | $ 0 |
Debt issuance costs | 20,100,000 | $ 20,600,000
Senior Secured Revolving Facility [Member] |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 100,000,000 | $ 100,000,000
Debt maturity date | Oct. 19, 2020 | Oct. 19, 2020
Debt issuance costs | $ 2,800,000 | $ 2,900,000
Senior Secured Revolving Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 0.43% | 0.42%
Applicable margin | 3.50% |

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