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Note 8 - Stockholders' Equity (Details) - Reclassification from Accumulated Other Comprehensive Loss (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Loss on cash flow hedges, net $ (457) $ (872) $ (1,172)
Floor Plan Interest Expense [Member]
      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Loss on cash flow hedges (740) (1,413) (1,899)
Income Tax Provision [Member]
      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Income tax benefits $ 283 $ 541 $ 727