Goodwill And Intangible Assets (Summary Of Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 37,009	$ 34,743
Less: Accumulated amortization	(26,972)	(24,854)
Net intangible assets other than goodwill	10,037	9,889	[1],[2]
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	28,671	26,793
Less: Accumulated amortization	(21,870)	(20,108)
Net intangible assets other than goodwill	6,801	6,685
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	7,254	7,254
Less: Accumulated amortization	(4,634)	(4,300)
Net intangible assets other than goodwill	2,620	2,954
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,084	696
Less: Accumulated amortization	(468)	(446)
Net intangible assets other than goodwill	$ 616	$ 250

[1] Certain 2015 balances have been reclassified to conform to the 2016 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).

[2] Certain 2015 balances included the restatement impact as a result of a change in accounting principle (see Note 2 - Summary of Significant Accounting Policies - Accounting Changes).