Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v2.4.0.8
Long-Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2011
Long-term debt      
Less current maturities $ 971 $ 971  
Long-term debt, less current maturities 110,509 110,995  
Interest rate swap
     
Long-term debt, additional disclosure      
Notional amount 50,000    
Fixed interest rate on derivative (as a percent) 6.335%    
Variable rate basis LIBOR    
Interest rate added to variable rate (as a percent) 4.25%    
LIBOR floor (as a percent) 1.50%    
Senior credit facilities | Term Loan
     
Long-term debt      
Total long-term debt 111,480 111,966  
Less current maturities 971 971  
Long-term debt, less current maturities 110,509 110,995  
Unamortized discount on issuance of debt 857 946 1,250
Long-term debt, additional disclosure      
Borrowings under senior credit facility 125,000    
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 25.00%    
Reduced percentage of excess cash flow paid as additional principal prepayments upon achievement of certain leverage ratio thresholds, two 0.00%    
Senior credit facilities | Term Loan | Interest rate swap
     
Long-term debt, additional disclosure      
Length of time after closing date for entering into a hedge 90 days    
Notional amount 50,000    
Negative fair value included in other long-term liabilities 410    
Number of financial institutions for which the entity is exposed to counterparty credit risk 1    
Fixed interest rate on derivative (as a percent) 6.335%    
Variable rate basis LIBOR    
Interest rate added to variable rate (as a percent) 4.25%    
LIBOR floor (as a percent) 1.50%    
Senior credit facilities | Term Loan | Minimum | Interest rate swap
     
Long-term debt, additional disclosure      
Percentage of aggregate outstanding principal amount of debt hedged 25.00%    
Senior credit facilities | Term Loan | First option
     
Long-term debt, additional disclosure      
Additional fixed interest rate spread (as a percent) 3.25%    
Senior credit facilities | Term Loan | First option | Prime
     
Long-term debt, additional disclosure      
Variable rate basis Prime Rate    
Senior credit facilities | Term Loan | 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 | First option | One month London Interbank Offered Rate
     
Long-term debt, additional disclosure      
Variable rate basis London Interbank Offered Rate for a one month interest period    
Senior credit facilities | Term Loan | First option | Fixed rate
     
Long-term debt, additional disclosure      
Additional interest margin added to fixed and variable rates (as a percent) 1.00%    
Fixed interest rate base (as a percent) 1.50%    
Senior credit facilities | Term Loan | Second option
     
Long-term debt, additional disclosure      
Additional fixed interest rate spread (as a percent) 4.25%    
Senior credit facilities | Term Loan | Second option | Fixed rate
     
Long-term debt, additional disclosure      
Additional interest margin added to fixed and variable rates (as a percent) 1.50%    
Senior credit facilities | Revolving credit facility
     
Long-term debt, additional disclosure      
Borrowings under senior credit facility 80,000    
Remaining borrowing availability 26,654    
Fixed charge coverage ratio to be maintained if certain minimum availability under the credit facility is not maintained. 1.0    
Outstanding borrowings 28,000    
Senior credit facilities | Revolving credit facility | Maximum
     
Long-term debt, additional disclosure      
Annual acquisitions allowed $ 10,000    
Senior credit facilities | Revolving credit facility | First option
     
Long-term debt, additional disclosure      
Additional fixed interest rate spread (as a percent) 1.75%    
Senior credit facilities | Revolving credit facility | First option | Prime
     
Long-term debt, additional disclosure      
Variable rate basis Prime Rate    
Senior credit facilities | Revolving credit facility | First option | London Interbank Offered Rate
     
Long-term debt, additional disclosure      
Variable rate basis London Interbank Offered Rate    
Senior credit facilities | Revolving credit facility | Second option
     
Long-term debt, additional disclosure      
Additional fixed interest rate spread (as a percent) 1.25%    
Senior credit facilities | Revolving credit facility | Second option | Prime
     
Long-term debt, additional disclosure      
Variable rate basis Prime Rate    
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 | One month London Interbank Offered Rate
     
Long-term debt, additional disclosure      
Variable rate basis London Interbank Offered Rate    
Interest rate added to variable rate (as a percent) 1.00%