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v3.25.3

Owned Inventory - Impairment Charges Taken on Projects in Progress (Details) $ in Thousands | 12 Months Ended
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Sep. 30, 2025 USD ($) community lot | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($)
Segment Reporting Information [Line Items] |  |  |
# of Communities Impaired | community | 2 |  |
# of Lots Impaired | lot | 89 |  |
Impairment Charge | $ 8,642 | $ 0 | $ 0
Level 3 | Fair Value, Measurements, Nonrecurring |  |  |
Segment Reporting Information [Line Items] |  |  |
Estimated Fair Value of Impaired Inventory at Time of Impairment | $ 19,050 |  |
Operating Segments | West |  |  |
Segment Reporting Information [Line Items] |  |  |
# of Communities Impaired | community | 1 |  |
# of Lots Impaired | lot | 24 |  |
Impairment Charge | $ 2,236 | 0 | 0
Operating Segments | West | Level 3 | Fair Value, Measurements, Nonrecurring |  |  |
Segment Reporting Information [Line Items] |  |  |
Estimated Fair Value of Impaired Inventory at Time of Impairment | $ 5,003 |  |
Operating Segments | Southeast |  |  |
Segment Reporting Information [Line Items] |  |  |
# of Communities Impaired | community | 1 |  |
# of Lots Impaired | lot | 65 |  |
Impairment Charge | $ 5,404 | 0 | 0
Operating Segments | Southeast | Level 3 | Fair Value, Measurements, Nonrecurring |  |  |
Segment Reporting Information [Line Items] |  |  |
Estimated Fair Value of Impaired Inventory at Time of Impairment | $ 11,837 |  |
Corporate and unallocated |  |  |
Segment Reporting Information [Line Items] |  |  |
# of Communities Impaired | community | 0 |  |
# of Lots Impaired | lot | 0 |  |
Impairment Charge | $ 1,002 | $ 0 | $ 0
Corporate and unallocated | Level 3 | Fair Value, Measurements, Nonrecurring |  |  |
Segment Reporting Information [Line Items] |  |  |
Estimated Fair Value of Impaired Inventory at Time of Impairment | $ 2,210 |  |

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