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Inventory - Schedule of Discounted Cash Flow Analysis (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2016 USD ($) lot Community | Jun. 30, 2016 USD ($) lot Community
Real Estate, Write-down or Reserve [Line Items] |  |
Number of Communities Impaired | Community | 2 | 3
Number of Lots Impaired | lot | 257 | 291
Impairment Charge | $ 11,899 | $ 13,724
Estimated Fair Value of Impaired Inventory at Period End | $ 28,900 | $ 34,418
Corporate and unallocated |  |
Real Estate, Write-down or Reserve [Line Items] |  |
Number of Communities Impaired | Community | 0 | 0
Number of Lots Impaired | lot | 0 | 0
Impairment Charge | $ 789 | $ 1,101
Estimated Fair Value of Impaired Inventory at Period End | $ 0 | $ 0
West Segment |  |
Real Estate, Write-down or Reserve [Line Items] |  |
Number of Communities Impaired | Community | 1 | 2
Number of Lots Impaired | lot | 179 | 213
Impairment Charge | $ 5,216 | $ 6,729
Estimated Fair Value of Impaired Inventory at Period End | $ 10,827 | $ 16,345
East Segment |  |
Real Estate, Write-down or Reserve [Line Items] |  |
Number of Communities Impaired | Community | 1 | 1
Number of Lots Impaired | lot | 78 | 78
Impairment Charge | $ 5,894 | $ 5,894
Estimated Fair Value of Impaired Inventory at Period End | $ 18,073 | $ 18,073

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