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Inventory - Impairments and Lot Option Abandonment Charges, by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Impairment of Inventory, Projects in Progress | $ 0 | $ 1,825 | $ 0 | $ 1,825
Impairment of inventory, land held for sale | 94 | 0 | 94 | 568
Abandonments | 188 | 0 | 188 | 788
Total impairment and abandonment charges | 282 | 1,825 | 282 | 3,181
West Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Impairment of Inventory, Projects in Progress | 0 | 1,513 | 0 | 1,513
Impairment of inventory, land held for sale | 94 | 0 | 94 | 0
East Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Impairment of inventory, land held for sale | 0 | 0 | 0 | 197
Abandonments | 188 | 0 | 188 | 0
Southeast Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Impairment of inventory, land held for sale | 0 | 0 | 0 | 371
Abandonments | 0 | 0 | 0 | 788
Corporate and unallocated |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Impairment of Inventory, Projects in Progress | $ 0 | $ 312 | $ 0 | $ 312

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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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