Annual report pursuant to Section 13 and 15(d)

BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Property and Equipment, net (Details)

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BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Property and Equipment, net (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]    
Gross property and equipment $ 90,794 $ 81,055
Accumulated depreciation (57,163) (47,853)
Total 33,631 33,202
Computer and office equipment [Member]    
Property, Plant and Equipment [Line Items]    
Gross property and equipment 40,731 35,288
Model home furnishings [Member]    
Property, Plant and Equipment [Line Items]    
Gross property and equipment $ 50,063 $ 45,767