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Inventories (Tables)
9 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories Net
                 
    September 30,     December 31,  
    2011     2010  
New vehicles
  $ 949,357     $ 1,008,005  
Used vehicles
    453,180       366,404  
Parts, accessories and other
    79,092       74,748  
 
           
 
               
Total inventories
  $ 1,481,629     $ 1,449,157