Goodwill And Intangible Assets (Summary Of The Intangible Assets Subject To Amortization) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 31,996	$ 32,147
Less: Accumulated amortization	16,335	14,148
Total, net	15,661	17,999
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	24,284	24,471
Less: Accumulated amortization	12,873	11,238
Total, net	11,411	13,233
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	7,254	7,220
Less: Accumulated amortization	3,059	2,553
Total, net	4,195	4,667
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	458	456
Less: Accumulated amortization	403	357
Total, net	$ 55	$ 99