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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Lot	Dec. 31, 2013 Lot
Commitment And Contingencies [Line Items]
Accruals for asserted or unasserted matters			$ 0
Reserve percentage to cover estimated costs			1.00%
Non-refundable cash deposits pertaining to land option contracts			21.9	19.7
Purchase contracts for lots			1,224	1,184
Aggregate purchase price	255.7	262.1
Surety bonds [Member]
Commitment And Contingencies [Line Items]
Outstanding surety bonds	$ 38.8	$ 41.4	$ 38.8	$ 41.4

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- Definition

Non-Refundable Deposits

+ References

No definition available.

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- Definition

Warranty Reserve Percentage To Homebuyers

+ References

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The number of units in a real estate property owned as of the balance sheet date.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

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- Definition

The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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