INTERIM FINANCIAL INFORMATION - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2012
Business And Organization [Line Items]
Maximum percentage of likelihood to assess qualitative factors	50.00%
U.S [Member]
Business And Organization [Line Items]
Number of locations with operations	15
U.K [Member]
Business And Organization [Line Items]
Number of locations with operations	11
Number of dealerships	11
East [Member]
Business And Organization [Line Items]
Number of dealerships	47
West [Member]
Business And Organization [Line Items]
Number of dealerships	64