Property Plant and Equipment ("PP&E") - Summary of Property Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Homebuilding:
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 148,916	$ 134,049
Finance lease right-of-use assets	7,051	0
Less: accumulated depreciation	(96,656)	(91,815)
Net Homebuilding PP&E	52,260	42,234
Homebuilding: \| Office facilities and other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	39,218	37,789
Homebuilding: \| Model home furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	31,352	31,593
Homebuilding: \| Production facilities
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	71,295	64,667
Mortgage Banking:
Property, Plant and Equipment [Line Items]
Net Homebuilding PP&E	5,828	6,510
Mortgage Banking: \| Office facilities and other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	14,617	13,724
Less: accumulated depreciation	(8,789)	(7,214)
Net Homebuilding PP&E	$ 5,828	$ 6,510

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of lessee's right to use underlying asset under finance lease.

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