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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).

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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