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Annual Financial Information (Details Textual)
Dec. 31, 2016
Business and Organization [Line Items]  
Number of domestic regions 2
Number of international regions 2
East [Member]  
Business and Organization [Line Items]  
Number of dealerships 36
West [Member]  
Business and Organization [Line Items]  
Number of dealerships 75
U.S.  
Business and Organization [Line Items]  
Number of States in which Entity Operates 14
U.K.  
Business and Organization [Line Items]  
Number of Towns in which Entity Operates 20
Number of dealerships 30
Brazil  
Business and Organization [Line Items]  
Number of States in which Entity Operates 4
Number of dealerships 18