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Long-Term Debt (Details) (USD $)
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3 Months Ended |
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Mar. 31, 2013
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Dec. 31, 2012
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Mar. 31, 2012
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Jun. 30, 2011
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| Long-term debt |
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| Less current maturities |
$ 971,000
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$ 971,000
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| Long-term debt, less current maturities |
110,752,000
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110,995,000
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Interest rate swap
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| Long-term debt, additional disclosure |
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| Notional amount |
50,000,000
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| Fixed interest rate on derivative (as a percent) |
6.335%
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| Variable rate basis |
LIBOR
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| Interest rate added to variable rate (as a percent) |
4.25%
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| LIBOR floor (as a percent) |
1.50%
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Senior credit facilities | Term Loan
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| Long-term debt |
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| Total long-term debt |
111,723,000
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111,966,000
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| Less current maturities |
971,000
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971,000
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| Long-term debt, less current maturities |
110,752,000
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110,995,000
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| Unamortized discount on issuance of debt |
901,000
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946,000
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1,250,000
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| Long-term debt, additional disclosure |
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| Borrowings under senior credit facility |
125,000,000
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| Percentage of net cash proceeds of certain asset sales, certain insurance or condemnation events, requirement for additional principal prepayments |
100.00%
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| Period before end of the fiscal year, for additional principal prepayments of debt, from excess cash flow |
150 days
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| Percentage of excess cash flow paid as additional principal prepayments |
50.00%
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| Reduced percentage of excess cash flow paid as additional principal prepayments upon achievement of certain leverage ratio thresholds, one |
25.00%
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| Reduced percentage of excess cash flow paid as additional principal prepayments upon achievement of certain leverage ratio thresholds, two |
0.00%
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Senior credit facilities | Term Loan | Interest rate swap
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| Long-term debt, additional disclosure |
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| Length of time after closing date for entering into a hedge |
90 days
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| Notional amount |
50,000,000
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| Negative fair value included in other long-term liabilities |
481,000
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| Number of financial institutions for which the entity is exposed to counterparty credit risk |
1
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| Fixed interest rate on derivative (as a percent) |
6.335%
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| Variable rate basis |
LIBOR
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| Interest rate added to variable rate (as a percent) |
4.25%
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| LIBOR floor (as a percent) |
1.50%
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Senior credit facilities | Term Loan | Minimum | Interest rate swap
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| Long-term debt, additional disclosure |
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| Percentage of aggregate outstanding principal amount of debt hedged |
25.00%
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Senior credit facilities | Term Loan | First option
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| Long-term debt, additional disclosure |
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| Additional fixed interest rate spread (as a percent) |
3.25%
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Senior credit facilities | Term Loan | First option | Prime
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| Long-term debt, additional disclosure |
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| Variable rate basis |
Prime Rate
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Senior credit facilities | Term Loan | First option | Federal funds
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| Long-term debt, additional disclosure |
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| Variable rate basis |
Federal funds
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| Interest rate added to variable rate (as a percent) |
0.50%
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Senior credit facilities | Term Loan | First option | One month London Interbank Offered Rate
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| Long-term debt, additional disclosure |
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| Variable rate basis |
London Interbank Offered Rate for a one month interest period
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Senior credit facilities | Term Loan | First option | Fixed rate
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| Long-term debt, additional disclosure |
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| Additional interest margin added to fixed and variable rates (as a percent) |
1.00%
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| Fixed interest rate base (as a percent) |
1.50%
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Senior credit facilities | Term Loan | Second option
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| Long-term debt, additional disclosure |
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| Additional fixed interest rate spread (as a percent) |
4.25%
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Senior credit facilities | Term Loan | Second option | Fixed rate
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| Long-term debt, additional disclosure |
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| Additional interest margin added to fixed and variable rates (as a percent) |
1.50%
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Senior credit facilities | Revolving credit facility
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| Long-term debt, additional disclosure |
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| Borrowings under senior credit facility |
80,000,000
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| Remaining borrowing availability |
38,267,000
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| Fixed charge coverage ratio to be maintained if certain minimum availability under the credit facility is not maintained. |
1.0
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| Amount outstanding |
0
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Senior credit facilities | Revolving credit facility | Maximum
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| Long-term debt, additional disclosure |
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| Annual acquisitions allowed |
$ 10,000,000
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Senior credit facilities | Revolving credit facility | First option
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| Long-term debt, additional disclosure |
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| Additional fixed interest rate spread (as a percent) |
1.75%
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Senior credit facilities | Revolving credit facility | First option | One month London Interbank Offered Rate
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| Long-term debt, additional disclosure |
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| Variable rate basis |
Prime Rate
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Senior credit facilities | Revolving credit facility | First option | London Interbank Offered Rate
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| Long-term debt, additional disclosure |
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| Variable rate basis |
London Interbank Offered Rate
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Senior credit facilities | Revolving credit facility | Second option
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| Long-term debt, additional disclosure |
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| Additional fixed interest rate spread (as a percent) |
1.25%
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Senior credit facilities | Revolving credit facility | Second option | Prime
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| Long-term debt, additional disclosure |
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| Variable rate basis |
Federal funds
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Senior credit facilities | Revolving credit facility | Second option | Federal funds
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| Long-term debt, additional disclosure |
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| Variable rate basis |
London Interbank Offered Rate for a one month interest period
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| Interest rate added to variable rate (as a percent) |
0.50%
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Senior credit facilities | Revolving credit facility | Second option | One month London Interbank Offered Rate
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| Long-term debt, additional disclosure |
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| Variable rate basis |
London Interbank Offered Rate
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| Interest rate added to variable rate (as a percent) |
1.00%
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