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Note 16 - Related Party Transactions (Details) (USD $)
 12 Months Ended 9 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Sale of Nissan, Volkswagen and BMW Stores [Member]
Mar. 27, 2012
Sale of Nissan, Volkswagen and BMW Stores [Member]
Dec. 31, 2013
Sale of Land [Member]
Dec. 31, 2012
Remaining 20% Interest [Member]
Dec. 31, 2013
Remaining 20% Interest [Member]
Mar. 27, 2012
Remaining 20% Interest [Member]
Note 16 - Related Party Transactions (Details) [Line Items]                
Related Party Transaction, Sale Ownership Percentage       80.00%        
Related Party Transaction, Amounts of Transaction     $ 9,600,000   $ 4,200,000      
Proceeds from Divestiture of Businesses, Net of Cash Divested 6,618,000 23,838,000 2,900,000          
Noncash or Part Noncash Divestiture, Amount of Consideration Received 6,712,000 1,784,000 6,700,000          
Gain (Loss) on Disposition of Business     700,000          
Agreement, Purchase Price Intangible Assets     1,200,000          
Equity Method Investment, Ownership Percentage       20.00%        
Equity Method Investments             1,200,000 800,000
Income (Loss) from Equity Method Investments           200,000    
Gain (Loss) on Disposition of Assets         $ 2,500,000