Owned Inventory - Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Segment Reporting Information [Line Items]
Projects in progress	$ 1,551,100	$ 1,472,544
Land held for future development	19,879	19,879
Land held for sale	10,822	9,179
Total owned inventory	1,581,801	1,501,602
Corporate and unallocated
Segment Reporting Information [Line Items]
Projects in progress	164,593	156,779
Land held for future development	0	0
Land held for sale	0	0
Total owned inventory	164,593	156,779
West \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	832,477	781,036
Land held for future development	3,483	3,483
Land held for sale	8,315	4,478
Total owned inventory	844,275	788,997
East \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	273,491	264,991
Land held for future development	10,888	10,888
Land held for sale	347	584
Total owned inventory	284,726	276,463
Southeast \| Operating Segments
Segment Reporting Information [Line Items]
Projects in progress	280,539	269,738
Land held for future development	5,508	5,508
Land held for sale	2,160	4,117
Total owned inventory	$ 288,207	$ 279,363

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 http://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

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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 http://asc.fasb.org/extlink&oid=120400017&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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