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Inventory - Results of Discounted Cash Flow Analysis (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 lot Community
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 5
Number of lots impaired |  |  |  | 246
Impairment Charges |  |  |  | $ 8,924
Estimated fair value of impaired inventory |  |  |  | 20,857
Continuing Operations |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 5
Number of lots impaired |  |  |  | 246
Impairment Charges | 0 | 5,731 | 59 | 8,864
Estimated fair value of impaired inventory |  |  |  | 20,857
Continuing Operations | Unallocated |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 0
Number of lots impaired |  |  |  | 0
Impairment Charges | 0 | 389 | 0 | 473
Estimated fair value of impaired inventory |  |  |  | 0
Continuing Operations | West Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 2
Number of lots impaired |  |  |  | 116
Impairment Charges | 0 | 1,590 | 46 | 3,788
Estimated fair value of impaired inventory |  |  |  | 11,058
Continuing Operations | East Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 2
Number of lots impaired |  |  |  | 93
Impairment Charges | 0 | 3,122 | 13 | 3,809
Estimated fair value of impaired inventory |  |  |  | 7,342
Continuing Operations | Southeast Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 1
Number of lots impaired |  |  |  | 37
Impairment Charges | 0 | 630 | 0 | 794
Estimated fair value of impaired inventory |  |  |  | 2,457
Discontinued Operations |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  |  |  | 0
Number of lots impaired |  |  |  | 0
Impairment Charges | 0 | 42 | 0 | 60
Estimated fair value of impaired inventory |  |  |  | 0
Discounted Cash Flow Analysis [Member] |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 3 |  |
Number of lots impaired |  | 170 |  |
Impairment Charges |  | 5,773 |  |
Estimated fair value of impaired inventory |  | 11,187 |  |
Discounted Cash Flow Analysis [Member] | Continuing Operations |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 3 |  |
Number of lots impaired |  | 170 |  |
Impairment Charges |  | 5,731 |  |
Estimated fair value of impaired inventory |  | 11,187 |  |
Discounted Cash Flow Analysis [Member] | Continuing Operations | Unallocated |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 0 |  |
Number of lots impaired |  | 0 |  |
Impairment Charges |  | 389 |  |
Estimated fair value of impaired inventory |  | 0 |  |
Discounted Cash Flow Analysis [Member] | Continuing Operations | West Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 1 |  |
Number of lots impaired |  | 65 |  |
Impairment Charges |  | 1,590 |  |
Estimated fair value of impaired inventory |  | 4,680 |  |
Discounted Cash Flow Analysis [Member] | Continuing Operations | East Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 1 |  |
Number of lots impaired |  | 68 |  |
Impairment Charges |  | 3,122 |  |
Estimated fair value of impaired inventory |  | 4,050 |  |
Discounted Cash Flow Analysis [Member] | Continuing Operations | Southeast Segment |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 1 |  |
Number of lots impaired |  | 37 |  |
Impairment Charges |  | 630 |  |
Estimated fair value of impaired inventory |  | 2,457 |  |
Discounted Cash Flow Analysis [Member] | Discontinued Operations |  |  |  |
Real Estate, Write-down or Reserve [Line Items] |  |  |  |
Number of communities impaired |  | 0 |  |
Number of lots impaired |  | 0 |  |
Impairment Charges |  | 42 |  |
Estimated fair value of impaired inventory |  | $ 0 |  |

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