Real Estate Inventory and Land Deposits - Schedule of Development Status of Land Inventory (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Book Value of Land and Development [Member]
Inventory [Line Items]
Raw	$ 417,049	$ 378,081
Partially developed	475,397	645,276
Finished	1,468,831	1,305,697
Long-term strategic assets	10,434	12,165
Total	2,371,711	2,341,219
Owned Lots [Member]
Inventory [Line Items]
Raw	7,942	8,300
Partially developed	7,604	8,904
Finished	12,594	12,294
Long-term strategic assets	1,600	3,105
Total	$ 29,740	$ 32,603

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=51655945&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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