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Land Under Development - Additional Information (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) parcel lot	Jan. 31, 2017 USD ($)
Real Estate [Abstract]
Acquisition costs of raw land parcel		$ 14,400
Number of raw parcels of land owned | parcel	3
Carrying value of raw parcels of land	$ 19,182
Number of finished lots expected to be developed from raw parcels of land | lot	400
Aggregate additional funding commitments related to raw land property under joint development	$ 9,000
Expected development credits that will offset the aggregate additional funding commitments related to raw land property development	$ 4,800

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- Definition

Aggregate additional funding commitments related to raw land property development.

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Expected development credit offset amount.

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- Definition

Inventory real estate land acquisition costs.

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- Definition

Number of finished lots expected to be developed from raw parcels of land.

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Number of raw parcels of land owned.

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- Definition

Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities..

+ 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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