Goodwill And Intangible Assets (Summary Of Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 36,854	$ 34,743
Less: Accumulated amortization	(26,667)	(24,854)
Net intangible assets	10,187	9,889	[1]
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	28,834	26,793
Less: Accumulated amortization	(21,651)	(20,108)
Net intangible assets	7,183	6,685
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	7,254	7,254
Less: Accumulated amortization	(4,551)	(4,300)
Net intangible assets	2,703	2,954
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	766	696
Less: Accumulated amortization	(465)	(446)
Net intangible assets	$ 301	$ 250

[1] Certain prior period amounts have been reclassified to conform to the current period presentation (see Note 1 - The Company and Basis of Presentation - Reclassifications)