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Long-Term Debt (Details)
$ in Thousands
1 Months Ended 3 Months Ended
May. 09, 2012
USD ($)
Apr. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Long Term Debt Textuals [Abstract]          
Repayments of long-term debt     $ 8 $ 8  
Additional borrowing capacity, accordion feature     80,000    
Debt instrument unamortized loan fees     $ 5,600    
First lien senior secured net leverage ratio     2.03    
Interest coverage ratio     2.52    
Carrying Value          
Long Term Debt Textuals [Abstract]          
Long-term debt, fair value     $ 376,372    
Estimated Fair Value          
Long Term Debt Textuals [Abstract]          
Long-term debt, fair value     $ 380,986    
Senior Notes | Between first and second year after closing          
Long Term Debt Textuals [Abstract]          
Redemption price as percentage of principal amount     104.50%    
Senior Notes | Between second and third year after closing          
Long Term Debt Textuals [Abstract]          
Redemption price as percentage of principal amount     102.25%    
Senior Notes | Twelve months commencing on May 2017 and thereafter          
Long Term Debt Textuals [Abstract]          
Redemption price as percentage of principal amount     100.00%    
Senior Notes | Maximum          
Long Term Debt Textuals [Abstract]          
Debt instrument redemption as percentage of original principal notice period     60 days    
Senior Notes | Minimum          
Long Term Debt Textuals [Abstract]          
Debt instrument redemption as percentage of original principal notice period     30 days    
Senior Notes | 9% Senior Unsecured Notes Due 2018          
Long Term Debt Textuals [Abstract]          
Proceeds from issuance of debt $ 200,000        
Interest rate (percent) 9.00%        
Senior Notes | 9% Senior Unsecured Notes Due 2018 | Carrying Value | Level 2          
Long Term Debt Textuals [Abstract]          
Long-term debt, fair value     $ 196,492    
Senior Notes | 9% Senior Unsecured Notes Due 2018 | Estimated Fair Value | Level 2          
Long Term Debt Textuals [Abstract]          
Long-term debt, fair value     $ 200,422    
Senior Notes | Term Loan Due 2017          
Long Term Debt Textuals [Abstract]          
Proceeds from issuance of debt $ 200,000        
Senior Notes | Term Loan Due 2017 | LIBOR          
Long Term Debt Textuals [Abstract]          
Interest margin (percent)     4.00%    
Senior Notes | Term Loan Due 2017 | Minimum          
Long Term Debt Textuals [Abstract]          
Interest rate (percent)     1.25%    
Senior Notes | Term Loan Due 2017 | Carrying Value          
Long Term Debt Textuals [Abstract]          
Long-term debt, fair value     $ 179,880    
Senior Notes | Term Loan Due 2017 | Estimated Fair Value          
Long Term Debt Textuals [Abstract]          
Long-term debt, fair value     $ 180,564    
Senior Notes | Term Loan Due 2017 | Total net leverage ratio greater than 4.00 to 1.00          
Long Term Debt Textuals [Abstract]          
Mandatory prepayments as a percentage of entity's excess cash flow     50.00%    
Senior Notes | Term Loan Due 2017 | Total net leverage ratio greater than 4.00 to 1.00 | Minimum          
Long Term Debt Textuals [Abstract]          
Total net leverage ratio     4.00    
Senior Notes | Term Loan Due 2017 | Total net leverage ratio greater than 3.00 to 1.00 but less than or equal to 4.00 to 1.00          
Long Term Debt Textuals [Abstract]          
Mandatory prepayments as a percentage of entity's excess cash flow     25.00%    
Senior Notes | Term Loan Due 2017 | Total net leverage ratio greater than 3.00 to 1.00 but less than or equal to 4.00 to 1.00 | Maximum          
Long Term Debt Textuals [Abstract]          
Total net leverage ratio     4.00    
Senior Notes | Term Loan Due 2017 | Total net leverage ratio greater than 3.00 to 1.00 but less than or equal to 4.00 to 1.00 | Minimum          
Long Term Debt Textuals [Abstract]          
Total net leverage ratio     3.00    
Senior Notes | Term Loan Due 2017 | Total net leverage ratio less than or equal to 3.00 to 1.00          
Long Term Debt Textuals [Abstract]          
Mandatory prepayments as a percentage of entity's excess cash flow     0.00%    
Secured Debt          
Long Term Debt Textuals [Abstract]          
Repayments of long-term debt $ 342,100        
Revolving Credit Facility          
Long Term Debt Textuals [Abstract]          
Remaining borrowing capacity     $ 35,000    
Revolving Credit Facility | Total net leverage ratio greater than 3.50 to 1.00          
Long Term Debt Textuals [Abstract]          
Unused capacity commitment fee percentage     0.50%    
Revolving Credit Facility | Total net leverage ratio greater than 3.50 to 1.00 | Maximum          
Long Term Debt Textuals [Abstract]          
Total net leverage ratio     3.50    
Revolving Credit Facility | Total net leverage ratio less than or Equal to 3.50 to 1.00          
Long Term Debt Textuals [Abstract]          
Unused capacity commitment fee percentage     0.375%    
Revolving Credit Facility | Total net leverage ratio less than or Equal to 3.50 to 1.00 | Minimum          
Long Term Debt Textuals [Abstract]          
Total net leverage ratio     3.50    
Subsequent Event          
Long Term Debt Textuals [Abstract]          
Actual payment required by the lenders   $ 2,900      
Adjustments for New Accounting Pronouncement | Other Assets          
Long Term Debt Textuals [Abstract]          
Deferred Finance Costs, Net         $ 1,500
Adjustments for New Accounting Pronouncement | Long-term Debt          
Long Term Debt Textuals [Abstract]          
Deferred Finance Costs, Net         $ 1,500