Property Plant and Equipment Net - Summary of Property Plant and Equipment Net Table (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net		$ 47
Homebuilding [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	106,067	85,351
Less: accumulated depreciation	(59,825)	(52,752)
Property, Plant and Equipment, Net	46,242	32,599
Homebuilding [Member] | Office Facilities and Other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	29,326	19,547
Homebuilding [Member] | Model Home Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	28,945	22,432
Homebuilding [Member] | Production Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	47,796	39,396
Homebuilding [Member] | Property under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross		3,976
Mortgage Banking [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	6,189	4,699
Mortgage Banking [Member] | Office Facilities and Other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	10,508	8,118
Less: accumulated depreciation	(4,319)	(3,419)
Property, Plant and Equipment, Net	$ 6,189	$ 4,699