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Inventory - Narrative (Details) (USD $) |  |  | 3 Months Ended
--- | --- | --- | ---
Dec. 31, 2012 home | Sep. 30, 2012 home | Dec. 31, 2012 Minimum | Dec. 31, 2011 Minimum | Dec. 31, 2012 Maximum | Dec. 31, 2011 Maximum
Real Estate Properties [Line Items] |  |  |  |  |  |
Number of substantially completed homes | 147 | 174 |  |  |  |
Total value of substantially completed homes | $ 33,600,000 | $ 39,700,000 |  |  |  |
Discount rate |  |  | 10.90% | 14.30% | 13.00% | 17.00%
Deposits and non-refundable preacquisition costs incurred | 24,392,000 | 24,923,000 |  |  |  |
Total remaining purchase price committed under all options | $ 213,026,000 | $ 198,498,000 |  |  |  |

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- Details
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