Property and Equipment - (Schedule Of Property And Equipment) (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment	$ 55,087	$ 42,217
Less accumulated depreciation	(21,829)	(14,306)
Total property and equipment, net	33,258	27,911
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	3,289	3,167
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	3,095	2,069
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,882	991
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	11,110	10,334
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	3,349	1,938
Model Furnishings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	24,118	16,113
Computer Hardware and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 8,244	$ 7,605