Inventory - Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Projects in Progress (a)	$ 1,382,045	$ 1,204,776
Land Held for Future Development	270,990	301,048
Land Held for Sale	44,555	51,672
Total owned inventory	1,697,590	1,557,496
West Segment
Segment Reporting Information [Line Items]
Projects in Progress (a)	583,210	462,508
Land Held for Future Development	230,778	260,898
Land Held for Sale	6,941	10,026
Total owned inventory	820,929	733,432
East Segment
Segment Reporting Information [Line Items]
Projects in Progress (a)	353,054	353,859
Land Held for Future Development	29,280	29,239
Land Held for Sale	30,927	34,530
Total owned inventory	413,261	417,628
Southeast Segment
Segment Reporting Information [Line Items]
Projects in Progress (a)	277,351	264,843
Land Held for Future Development	10,932	10,911
Land Held for Sale	5,587	4,821
Total owned inventory	293,870	280,575
Corporate and unallocated
Segment Reporting Information [Line Items]
Projects in Progress (a)	168,430	123,566
Land Held for Future Development	0	0
Land Held for Sale	1,100	2,295
Total owned inventory	$ 169,530	$ 125,861

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://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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph d

-Article 7

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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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