Property, Plant and Equipment, net - Summary of Property, Plant and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property under capital leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	$ 309	$ 495
Homebuilding [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	76,329	68,883
Less: accumulated depreciation	(49,313)	(45,640)
Property, Plant and Equipment, Net	27,016	23,243
Homebuilding [Member] | Office facilities and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	18,040	14,584
Homebuilding [Member] | Model home furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	18,330	16,950
Homebuilding [Member] | Manufacturing facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	35,983	33,373
Homebuilding [Member] | Property under capital leases [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,976	3,976
Mortgage Banking [Member]
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation	(3,391)	(3,139)
Property, Plant and Equipment, Net	2,465	1,694
Mortgage Banking [Member] | Office facilities and other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 5,856	$ 4,833