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Commitment and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Financial Instruments Owned and Pledged as Collateral [Line Items]
Surety bonds, issued and outstanding	$ 60,700,000	$ 60,700,000
Letters of credit, issued and outstanding	17,900,000	17,900,000
Option Contracts [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Letters of credit, issued and outstanding	3,900,000	3,900,000
Cash deposits	3,600,000	3,600,000
Right to acquire lots under options contracts, number of lots	1,546	1,546
Legal Recoveries [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Legal recoveries	3,800,000	7,600,000
Homeamerican [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Letters of credit, issued and outstanding	7,100,000	7,100,000
Estimated cost to related to bonds and letters of credit	$ 33,000,000	$ 33,000,000

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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