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Long-Term Debt, Capital Lease Obligations and Hedging Arrangements Textuals (Details) (USD $)	6 Months Ended			6 Months Ended			6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 Term loans [Member]	Dec. 31, 2011 Term loans [Member]	Jun. 30, 2012 Interest Rate Cap [Member]	Jun. 30, 2012 Interest Rate Cap [Member] Term loans [Member]	Jan. 18, 2011 Interest Rate Cap [Member] Term loans [Member]	Jun. 30, 2012 Interest Rate Swap [Member]	Jan. 18, 2011 Interest Rate Swap [Member] Term loans [Member]
Debt Instrument [Line Items]
Percentage of debt to be hedged	50.00%
Long-term debt, gross		$ 87,328,000	$ 87,389,000			$ 82,500,000
LIBOR cap						1.75%
LIBOR fixed								3.185%
Fee for this interest rate cap				$ 300,000
Debt instrument, interest rate, percentage					8.75%		10.185%

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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