Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Feb. 14, 2013
Term Loan, due 2019 (weighted average rate of 7.50%)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unamortized discount	$ 6,980	$ 7,834
Notes, 8.75%, 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	$ 907,420	908,166
Carrying Amount | Term Loan, due 2019 (weighted average rate of 7.50%)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	607,420	608,166
Carrying Amount | Notes, 8.75%, 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	924,204	932,995
Fair Value | Term Loan, due 2019 (weighted average rate of 7.50%)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	616,704	620,620
Fair Value | Notes, 8.75%, due 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	307,500	312,375
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	1,158	1,762
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