Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.5.0.2
Debt (Details)
 9 Months Ended
Sep. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Nov. 25, 2014
USD ($)
Line of Credit Facility [Line Items]      
Long-term debt $ 72,000,000 $ 95,000,000  
Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity     $ 170,000,000.0
Long-term debt 72,000,000 95,000,000  
Remaining borrowing capacity $ 68,800,000 $ 44,600,000  
Maximum leverage ratio 4.0    
Debt covenant, minimum availability required $ 10,000,000    
London Interbank Offered Rate (LIBOR) | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Increments of debt that can be converted $ 500,000    
Debt instrument, interest rate, stated percentage 3.28% 3.04%  
Maximum | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 3.00%    
Minimum | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Interest coverage rate 3.0    
Minimum | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 1.50%