Annual Financial Information (Details Textual)	Dec. 31, 2015
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	39
West [Member]
Business and Organization [Line Items]
Number of dealerships	77
U.S. [Member]
Business and Organization [Line Items]
Number of States in which Entity Operates	14
U.K. [Member]
Business and Organization [Line Items]
Number of Towns in which Entity Operates	15
Number of dealerships	17
Brazil [Member]
Business and Organization [Line Items]
Number of States in which Entity Operates	3
Number of dealerships	19