Owned Inventory - Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Projects in progress	$ 1,705,008	$ 1,702,312
Land held for future development	19,879	19,879
Land held for sale	16,764	15,674
Total owned inventory	1,741,651	1,737,865
Corporate and unallocated
Segment Reporting Information [Line Items]
Projects in progress	182,144	169,966
Land held for future development	0	0
Land held for sale	0	0
Total owned inventory	182,144	169,966
West \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	889,585	934,309
Land held for future development	3,483	3,483
Land held for sale	16,088	14,998
Total owned inventory	909,156	952,790
East \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	339,573	313,613
Land held for future development	10,888	10,888
Land held for sale	0	0
Total owned inventory	350,461	324,501
Southeast \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	293,706	284,424
Land held for future development	5,508	5,508
Land held for sale	676	676
Total owned inventory	$ 299,890	$ 290,608

Carrying amount as of the balance sheet date of project in progress

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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
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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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

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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//1943274/2147479440/944-210-S99-1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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