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Owned Inventory - Schedule of Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Sep. 30, 2024
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Projects in progress | $ 2,188,752 | $ 2,001,675
Land Held for Future Development | 19,489 | 19,879
Land Held for Sale | 25,166 | 19,086
Total owned inventory | 2,233,407 | 2,040,640
Corporate and unallocated |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 217,039 | 200,945
Land Held for Future Development | 0 | 0
Land Held for Sale | 0 | 0
Total owned inventory | 217,039 | 200,945
West | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 1,084,739 | 1,023,140
Land Held for Future Development | 3,483 | 3,483
Land Held for Sale | 17,552 | 17,110
Total owned inventory | 1,105,774 | 1,043,733
East | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 473,491 | 411,914
Land Held for Future Development | 10,888 | 10,888
Land Held for Sale | 4,837 | 1,300
Total owned inventory | 489,216 | 424,102
Southeast | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 413,483 | 365,676
Land Held for Future Development | 5,118 | 5,508
Land Held for Sale | 2,777 | 676
Total owned inventory | $ 421,378 | $ 371,860

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- Definition Carrying amount as of the balance sheet date of parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The net carrying amount as of the balance sheet date of the sum of the various components of an operative builder's inventory, including finished homes. Operative builders primarily consist of entities that develop land, construct residential homes and commercial and industrial buildings thereon, and sell them to home buyers and operators of the commercial and industrial properties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Carrying amount of land available for development. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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