Inventory - Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Projects in Progress	$ 1,412,483	$ 1,326,577
Land Held for Future Development	112,565	213,006
Land Held for Sale	17,759	29,696
Total owned inventory	1,542,807	1,569,279
Corporate and unallocated
Segment Reporting Information [Line Items]
Projects in Progress	187,385	186,987
Land Held for Future Development	0	0
Land Held for Sale	1,100	1,099
Total owned inventory	188,485	188,086
West Segment
Segment Reporting Information [Line Items]
Projects in Progress	673,828	586,420
Land Held for Future Development	87,231	172,015
Land Held for Sale	3,848	6,577
Total owned inventory	764,907	765,012
East Segment
Segment Reporting Information [Line Items]
Projects in Progress	250,002	276,785
Land Held for Future Development	14,391	30,036
Land Held for Sale	11,578	20,930
Total owned inventory	275,971	327,751
Southeast Segment
Segment Reporting Information [Line Items]
Projects in Progress	301,268	276,385
Land Held for Future Development	10,943	10,955
Land Held for Sale	1,233	1,090
Total owned inventory	$ 313,444	$ 288,430

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://www.xbrl.org/2003/role/presentationRef
-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=6877327&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://www.xbrl.org/2003/role/presentationRef
-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=6879938&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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