Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Details Textual)

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Discontinued Operations (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Dealership
Sep. 30, 2012
Dealership
Discontinued Operations (Textual) [Abstract]    
Disposed dealerships 3 8
Cash generated from disposition $ 28.3 $ 51.9
Disposal of net assets $ 13.6 $ 21.6
Disposed dealerships 0 0