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Loans To And Investments In Associated Companies (Garcadia) (Narrative) (Details) - Mar. 31, 2016
Total
facility
Dealership
Garcadia [Member]      
Investments In Associated Companies [Line Items]      
Number of automobile dealerships   27 27
Plan One [Member] | Garcadia [Member]      
Investments In Associated Companies [Line Items]      
Percentage of cash F\flows allocated from joint venture 65.00%    
Plan One [Member] | Garff Enterprises, Inc [Member]      
Investments In Associated Companies [Line Items]      
Percentage of cash F\flows allocated from joint venture 35.00%    
Plan Two [Member] | Garcadia [Member]      
Investments In Associated Companies [Line Items]      
Number of automobile dealerships     1
Percentage of cash F\flows allocated from joint venture 83.00%    
Plan Three [Member] | Garcadia [Member]      
Investments In Associated Companies [Line Items]      
Number of automobile dealerships     5
Percentage of cash F\flows allocated from joint venture 71.00%