Annual Financial Information (Details Textual)	Dec. 31, 2017
Business and Organization [Line Items]
Number of domestic regions	2
Number of international regions	2
U.S.
Business and Organization [Line Items]
Number of States in which Entity Operates	15
Number of dealerships	115
U.K.
Business and Organization [Line Items]
Number of Towns in which Entity Operates	28
Number of dealerships	42
Brazil
Business and Organization [Line Items]
Number of States in which Entity Operates	4
Number of dealerships	16