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Annual Financial Information (Details)
Dec. 31, 2018
town
international_region
state
dealership
Business and Organization [Line Items]  
Number of international regions | international_region 2
U.S.  
Business and Organization [Line Items]  
Number of states in which the entity operates | state 15
Number of dealerships 118
U.K.  
Business and Organization [Line Items]  
Number of towns in which the entity operates | town 32
Number of dealerships 47
Brazil  
Business and Organization [Line Items]  
Number of states in which the entity operates | state 4
Number of dealerships 18