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Inventory And Land Held For Sale (Narrative) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
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Jun. 30, 2017 USD ($) inactive_community inacitve_lot | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Inventory Disclosure [Abstract] |  |  |  |
Number of communities | inactive_community | 17 |  |  |
Number of lots | inacitve_lot | 4,600 |  |  |
Net Realizable Value Adjustments Land Held For Sale Total - land held for sale | $ (81,000) | $ (5,368) | $ (11,489) | $ (83,576)
Carrying value of land parcels | 151,000 |  |  |
Inventory adjustments NRV |  |  |  | 2,600
Inventory [Line Items] |  |  |  |
Land impairments |  | 8,617 | $ 70,965 | 88,952
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 | 4,500
May 2017 Strategic Review Communities [Member] |  |  |  |
Inventory [Line Items] |  |  |  |
Land impairments | $ 31,500 |  |  |
Large Project Impairment [Member] |  |  |  |
Inventory [Line Items] |  |  |  |
Land impairments |  |  |  | $ 53,000

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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=118932676&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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