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Discontinued Operations (Details 1) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Balance Sheet information regarding entities accounted for as discontinued operations    
Inventories $ 15,491 $ 80,942
Other assets 17,733 52,077
Total assets 33,224 133,019
Floor plan 12,020 70,093
Other liabilities 5,879 18,024
Total liabilities $ 17,899 $ 88,117