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Long-Term Debt - ABL Credit Facility (Details) - Line of Credit - ABL Credit Facility - USD ($)
Sep. 30, 2016
Dec. 31, 2016
Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Debt instrument face amount $ 50,000,000  
Available increase in borrowing limit $ 25,000,000  
Sub-limit percentage of total facility 10.00%  
Debt issuance costs $ 1,200,000  
Aggregate availability   $ 49,300,000
Debt outstanding   $ 0
Swingline Loan    
Line of Credit Facility [Line Items]    
Debt instrument face amount 5,000,000  
Letter of Credit    
Line of Credit Facility [Line Items]    
Debt instrument face amount $ 10,000,000  
LIBOR | Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Basis spread on variable rate (as a percent) 2.00%  
Base Rate | Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Basis spread on variable rate (as a percent) 1.00%  
Step-down rate 0.50%