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Acquisitions, Dispositions, Impairment, and Discontinued Operations (Summary Of Income From Discontinued Operations) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Property, Plant and Equipment [Abstract] |  |  |
Property revenues |  |  | $ 19,184
Property expenses |  |  | (6,898)
Property revenues less property expenses |  |  | 12,286
Property Management Expense |  |  | (242)
Depreciation and amortization |  |  | (4,327)
Income tax expense |  |  | (112)
Income from discontinued operations | $ 0 | $ 0 | 7,605
Gain on sale of discontinued operations, net of tax | $ 0 | $ 0 | $ 375,237

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- Definition Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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