Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Significant Accounting Policies [Line Items]
Cash related to a consolidated variable interest entity	$ 906	$ 462
Pre-tax charges related to impairment of contract land deposits		11,200	4,300
Pre-tax recovery related to impairment of contract land deposits	2,000
Contract land deposit asset impairment valuation allowance	65,000	70,300
Impairment of excess reorganization value	0
Goodwill acquired from business acquisition	441
Finite-lived intangibles acquired from business acquisition	8,778
Weighted average life of finite-lived intangible assets	6 years
Antidilutive stock options and restricted share units	194,416	467,367	443,565
Uncertain tax position threshold for tax benefit	50.00%
Mortgage Banking [Member]
Significant Accounting Policies [Line Items]
Restricted Cash	2,089	1,373
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Significant Accounting Policies [Line Items]
Typical length of days loans sold into secondary market	30 days
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Rate lock commitments [Member]
Significant Accounting Policies [Line Items]
Notional or Principal Amount	138,865
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Forward sales contracts [Member]
Significant Accounting Policies [Line Items]
Notional or Principal Amount	305,322
Homebuilding [Member]
Significant Accounting Policies [Line Items]
Restricted Cash	19,661	19,119
Goodwill acquired from business acquisition	441
Finite-lived intangibles acquired from business acquisition	$ 8,778
Model home furniture and fixtures [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Office facilities and other [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Office facilities and other [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Manufacturing facilities [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Manufacturing facilities [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	40 years