Owned Inventory - Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Projects in progress	$ 1,701,824	$ 1,702,312
Land held for future development	19,879	19,879
Land held for sale	20,253	15,674
Total owned inventory	1,741,956	1,737,865
Corporate and unallocated
Segment Reporting Information [Line Items]
Projects in progress	181,628	169,966
Land held for future development	0	0
Land held for sale	0	0
Total owned inventory	181,628	169,966
West \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	889,336	934,309
Land held for future development	3,483	3,483
Land held for sale	19,577	14,998
Total owned inventory	912,396	952,790
East \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	333,355	313,613
Land held for future development	10,888	10,888
Land held for sale	0	0
Total owned inventory	344,243	324,501
Southeast \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	297,505	284,424
Land held for future development	5,508	5,508
Land held for sale	676	676
Total owned inventory	$ 303,689	$ 290,608

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

No definition available.

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(a))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Carrying amount of land available for development.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),1(d))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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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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