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Owned Inventory - Narrative (Details) | 3 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) home | Dec. 31, 2021 USD ($) | Sep. 30, 2022 USD ($) home
Inventory Disclosure [Abstract] |  |  |
Number of homes under construction | home | 2,383 |  | 2,688
Number of homes under construction, spec homes | home | 840 |  | 887
Total, spec homes | $ 268,500,000 |  | $ 246,500,000
Number of homes under construction, in-process spec homes | home | 701 |  | 793
In-process spec homes | $ 211,600,000 |  | $ 208,700,000
Number of homes under construction, finished spec homes | home | 139 |  | 94
Finished spec homes | $ 56,900,000 |  | $ 37,800,000
Threshold number of homes below a minimum threshold of profitability | home | 10 |  |
Impairment of projects in process | $ 0 | $ 0 |
Total impairment charges on land held for sale | 0 | 0 |
Total abandonments charges | $ 190,000 | $ 0 |

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