Debt Maturities Of Debt (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	$ 10,403,000
2015	12,279,000
2016	118,725,000
2017	0
2018	0
Thereafter	652,932,000
Long-term Debt, Gross	794,339,000
Less: Amount representing estimated executory costs	(701,000)
Less: Amounts representing interest	(79,000)
Total debt	793,559,000	855,345,000
Senior Notes [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	0
2015	0
2016	0
2017	0
2018	0
Thereafter	649,572,000
Long-term Debt, Gross	649,572,000
Less: Amount representing estimated executory costs	0
Less: Amounts representing interest	0
Total debt	649,572,000
Capital Lease Obligations [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	1,017,000
2015	1,017,000
2016	594,000
2017	0
2018	0
Thereafter	0
Long-term Debt, Gross	2,628,000
Less: Amount representing estimated executory costs	(701,000)
Less: Amounts representing interest	(79,000)
Total debt	1,848,000	2,519,000
Revolving Credit Facilities [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	9,375,000
2015	11,250,000
2016	118,125,000
2017	0
2018	0
Thereafter	0
Long-term Debt, Gross	138,750,000
Less: Amount representing estimated executory costs	0
Less: Amounts representing interest	0
Total debt	138,750,000
Other Notes Payable [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	11,000
2015	12,000
2016	6,000
2017	0
2018	0
Thereafter	3,360,000
Long-term Debt, Gross	3,389,000
Less: Amount representing estimated executory costs	0
Less: Amounts representing interest	0
Total debt	$ 3,389,000