Homebuilding Accrued Liabilities and Financial Services Accounts Payable and Accrued Liabilities - Schedule of Financial Services Accounts Payable and Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Servicing Liabilities at Fair Value [Line Items]
Insurance reserves	$ 47,852	$ 49,376	$ 51,576	$ 49,631
Other accrued liabilities	14,225	15,729
Total accounts payable and accrued liabilities	$ 51,864	$ 52,446