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Inventory And Land Held For Sale (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Inventory Disclosure [Abstract] |  |  |
Net Realizable Value Adjustments Land Held For Sale Total - land held for sale | $ (871) | $ (5,368) | $ (11,489)
Inventory [Line Items] |  |  |
Land impairments | $ 7,044 | 8,617 | $ 70,965
Impaired Community |  |  |
Inventory [Line Items] |  |  |
Entitlement period sought |  |  | 10 years
Land impairments |  | $ 8,600 | $ 59,200
All Other Communities |  |  |
Inventory [Line Items] |  |  |
Land impairments |  |  | $ 11,800

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- Definition Charge against earnings in the period to reduce the current value of land held for sale to its fair value. + References No definition available. + Details
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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + 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=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 + Details
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