Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v3.3.0.814
Long-Term Debt (Details)
 9 Months Ended
Sep. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Long-term debt    
Long-term debt, less current portion $ 185,250,000 $ 186,471,000
Less current maturities 1,629,000 1,629,000
Term loan facility    
Long-term debt    
Long-term debt, less current portion 185,250,000 186,471,000
Less current maturities 1,629,000 1,629,000
Total long-term debt 186,879,000 188,100,000
Long-term debt, additional disclosure    
Unamortized discount on issuance of debt 1,696,000 1,900,000
Revolving credit facility | Maximum    
Long-term debt, additional disclosure    
Facilities consolidation expenditure allowed 15,000,000  
Swingline Loan    
Long-term debt, additional disclosure    
Maximum borrowing capacity 5,000,000  
Senior credit facilities | Term loan facility    
Long-term debt, additional disclosure    
Borrowings under senior credit facility $ 190,000,000  
Percentage of net cash proceeds of certain asset sales, certain insurance or condemnation events, requirement for additional principal prepayments 100.00%  
Period before end of the fiscal year, for additional principal prepayments of debt, from excess cash flow 150 days  
Percentage of excess cash flow paid as additional principal prepayments 50.00%  
Reduced percentage of excess cash flow paid as additional principal prepayments upon achievement of certain leverage ratio thresholds, one 0.00%  
Senior credit facilities | Term loan facility | Maximum    
Long-term debt, additional disclosure    
Additional term loan commitments $ 80,000,000  
Debt ratio 3.25  
Senior credit facilities | Term loan facility | First option | Minimum    
Long-term debt, additional disclosure    
Additional fixed interest rate spread (as a percent) 1.00%  
Additional interest margin added to fixed and variable rates (as a percent) 1.00%  
Senior credit facilities | Term loan facility | First option | Base rate    
Long-term debt, additional disclosure    
Fixed interest rate base (as a percent) 3.25%  
Senior credit facilities | Term loan facility | First option | Federal funds    
Long-term debt, additional disclosure    
Variable rate basis Federal funds  
Interest rate added to variable rate (as a percent) 0.50%  
Senior credit facilities | Term loan facility | First option | One month London Interbank Offered Rate    
Long-term debt, additional disclosure    
Variable rate basis LIBOR for a one month interest period  
Senior credit facilities | Term loan facility | First option | Prime    
Long-term debt, additional disclosure    
Variable rate basis Prime Rate  
Senior credit facilities | Term loan facility | Second option | Minimum    
Long-term debt, additional disclosure    
Additional fixed interest rate spread (as a percent) 1.00%  
Senior credit facilities | Term loan facility | Second option | Base rate    
Long-term debt, additional disclosure    
Fixed interest rate base (as a percent) 4.25%  
Senior credit facilities | Revolving credit facility    
Long-term debt, additional disclosure    
Borrowings under senior credit facility $ 100,000,000  
Outstanding borrowings 27,000,000 $ 0
Remaining borrowing availability $ 72,440,000  
Fixed charge coverage ratio to be maintained if certain minimum availability under the credit facility is not maintained. 1.0  
Senior credit facilities | Revolving credit facility | Maximum    
Long-term debt, additional disclosure    
Annual acquisitions allowed $ 12,500,000  
Senior credit facilities | Revolving credit facility | Fixed rate | Maximum    
Long-term debt, additional disclosure    
Fixed interest rate base (as a percent) 2.00%  
Senior credit facilities | Revolving credit facility | First option | Fixed rate | Minimum    
Long-term debt, additional disclosure    
Fixed interest rate base (as a percent) 1.50%  
Senior credit facilities | Revolving credit facility | Second option | Federal funds    
Long-term debt, additional disclosure    
Variable rate basis Federal funds  
Interest rate added to variable rate (as a percent) 0.50%  
Senior credit facilities | Revolving credit facility | Second option | Fixed rate | Maximum    
Long-term debt, additional disclosure    
Fixed interest rate base (as a percent) 1.00%  
Senior credit facilities | Revolving credit facility | Second option | Fixed rate | Minimum    
Long-term debt, additional disclosure    
Fixed interest rate base (as a percent) 0.50%  
Senior credit facilities | Revolving credit facility | Second option | One month London Interbank Offered Rate    
Long-term debt, additional disclosure    
Variable rate basis LIBOR for a one month interest period  
Interest rate added to variable rate (as a percent) 1.00%  
Senior credit facilities | Revolving credit facility | Second option | Prime    
Long-term debt, additional disclosure    
Variable rate basis Prime Rate  
Senior credit facilities | Letter of Credit    
Long-term debt, additional disclosure    
Maximum borrowing capacity $ 10,000,000