Goodwill And Intangible Assets (Summary Of Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 34,743	$ 31,827
Less: Accumulated amortization	(24,854)	(20,341)
Net intangible assets other than goodwill	9,889	11,486	[1]
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	26,793	24,150
Less: Accumulated amortization	(20,108)	(15,989)
Net intangible assets other than goodwill	6,685	8,161
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	7,254	7,254
Less: Accumulated amortization	(4,300)	(3,929)
Net intangible assets other than goodwill	2,954	3,325
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	696	423
Less: Accumulated amortization	(446)	$ (423)
Net intangible assets other than goodwill	$ 250

[1] Certain prior period amounts have been reclassified to conform to the current period presentation (see Note 2 - Significant Accounting Policies - Reclassifications).