Inventories - Schedule of Inventory (Detail) (Homebuilding [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Inventory [Line Items]
Total Inventories	$ 1,197,500	$ 1,002,521
West [Member]
Inventory [Line Items]
Housing completed or under construction	228,426	200,858
Land and land under development	347,683	230,344
Mountain [Member]
Inventory [Line Items]
Housing completed or under construction	179,882	183,522
Land and land under development	157,541	137,221
East [Member]
Inventory [Line Items]
Housing completed or under construction	160,910	128,569
Land and land under development	123,058	122,007
Subtotal [Member]
Inventory [Line Items]
Housing completed or under construction	569,218	512,949
Land and land under development	$ 628,282	$ 489,572

Carrying amount as of the balance sheet date of capitalized construction costs of homes for future sale.

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- Details

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ 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 FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

+ Details

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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

+ Details

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