Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Feb. 14, 2013
Term Loan, due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unamortized discount	$ (10,338)	$ (11,138)
Senior Secured Notes due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate	8.75%		8.75%
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 910,462	911,262
Carrying Amount | Term Loan, due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	610,462	611,262
Carrying Amount | Senior Secured Notes due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	300,000	300,000
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	899,592	912,454
Fair Value | Term Loan, due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	614,592	616,954
Fair Value | Senior Secured Notes due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	285,000	295,500
Fair Value, Measurements, Recurring | Interest rate swaps | Current | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, Current	0	0
Fair Value, Measurements, Recurring | Interest rate swaps | Current | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, Current	2,388	2,375
Fair Value, Measurements, Recurring | Interest rate swaps | Current | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, Current	0	0
Fair Value, Measurements, Recurring | Interest rate swaps | Other long-term liabilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, Long-term	0	0
Fair Value, Measurements, Recurring | Interest rate swaps | Other long-term liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, Long-term	1,011	1,232
Fair Value, Measurements, Recurring | Interest rate swaps | Other long-term liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, Long-term	$ 0	$ 0