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Inventory - Narrative (Details) (USD $) |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2013 home | Sep. 30, 2012 home | Mar. 31, 2012 Minimum | Mar. 31, 2012 Maximum
Real Estate Properties [Line Items] |  |  |  |
Number of substantially completed homes | 111 | 174 |  |
Total value of substantially completed homes | $ 26,900,000 | $ 39,700,000 |  |
Discount rate |  |  | 13.40% | 15.20%
Deposits and non-refundable preacquisition costs incurred | 25,022,000 | 24,923,000 |  |
Total remaining purchase price committed under all options | $ 206,904,000 | $ 198,498,000 |  |

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- Details
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