Quarterly report pursuant to Section 13 or 15(d)

Contingencies (Details Textual)

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Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Jul. 19, 2010
Contingencies (Textual) [Abstract]      
Period of arbitration, stayed by Arbitrator     30 days
Other accrued liabilities $ 7.3 $ 7.3  
Obligations for lease payment   106.0  
Maximum exposure associated with general indemnifications 15.9 3.1  
Minimum indemnifications expiration period from date of sale 12 months    
Maximum indemnifications expiration period from date of sale 24 months    
Guarantees for floor plan commitments $ 4.5 $ 4.5  
Percent ownership in joint venture 50.00%