Long-Term Debt - Schedule of Total Outstanding Debt (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Total long-term debt before unamortized debt discounts and deferred debt issuance costs $ 381,149,000 $ 372,909,000
Unamortized debt discounts (770,000) (1,014,000)
Deferred debt issuance costs (7,392,000) (9,098,000)
Total long-term debt 372,987,000 362,797,000
Less: current portion of long-term debt (8,205,000) (2,438,000)
Long-term debt, less current portion $ 364,782,000 360,359,000
8.25% Second Priority Senior Secured Obligations Due 2020    
Debt Instrument [Line Items]    
Interest rate (percent) 8.25%  
Senior notes payable | 8.25% Second Priority Senior Secured Obligations Due 2020    
Debt Instrument [Line Items]    
Total long-term debt before unamortized debt discounts and deferred debt issuance costs $ 355,000,000 $ 355,000,000
Interest rate (percent) 8.25% 8.25%
Subordinated notes payable | 2020 subordinated notes, net of discount    
Debt Instrument [Line Items]    
Total long-term debt before unamortized debt discounts and deferred debt issuance costs $ 11,478,000 $ 17,500,000
Interest rate (percent) 6.00%  
Quarterly principal payments $ 1,000,000  
Capital lease obligations    
Debt Instrument [Line Items]    
Total long-term debt before unamortized debt discounts and deferred debt issuance costs $ 8,417,000 $ 0
Interest rate (percent) 6.60% 6.60%
Monthly principal and interest payments $ 47,000  
Other notes payable    
Debt Instrument [Line Items]    
Total long-term debt before unamortized debt discounts and deferred debt issuance costs 6,254,000 $ 409,000
Quarterly principal payments $ 2,000,000