Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Schedule of Debt (Details)

v3.7.0.1
Long-Term Debt - Schedule of Debt (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Sep. 30, 2013
Debt Instrument [Line Items]      
Total debt $ 16,547,000 $ 179,443,000  
Less deferred loan costs, net of amortization 0 3,116,000  
Subtotal 16,547,000 176,327,000  
Less current portion of long-term debt 6,337,000 16,920,000  
Total long-term debt, net of deferred loan costs 10,210,000 159,407,000  
6.25% Term loan due September 2019 | 6.25% Term loan due September 2019      
Debt Instrument [Line Items]      
Total debt $ 0 146,750,000  
Debt instrument, interest rate, stated percentage 6.25%    
Equipment financing | Equipment financing      
Debt Instrument [Line Items]      
Total debt $ 16,547,000 19,193,000  
Revolving Credit Facility | Line of Credit | ABL Facility      
Debt Instrument [Line Items]      
Total debt 0 0  
Revolving Credit Facility | Line of Credit | Revolving Credit Facility      
Debt Instrument [Line Items]      
Total debt $ 0 $ 13,500,000  
Debt instrument, interest rate, stated percentage     6.25%