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Note 9 - Accumulated Other Comprehensive Income (Loss) (Tables)
3 Months Ended
Mar. 31, 2016
Reclassifications [Member]  
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Three Months Ended
 
   
March 31, 2016
   
March 31, 2015
 
Losses on cash flow swaps to:
               
Interest expense
  $     $ (29 )
Income tax benefit
          11  
Total reclassifications
  $     $ (18 )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Three Months Ended March 31, 2016
 
   
Cash Flow Swaps
   
Available for Sale Securities
   
Total
 
Balance as of December 31, 2015
  $     $ (305 )   $ (305 )
Change in fair value
                 
Income tax deferred
                 
Balance at March 31, 2016
  $     $ (305 )   $ (305 )
   
Three Months Ended March 31, 2015
 
   
Cash Flow Swaps
   
Available for Sale Securities
   
Total
 
Balance as of December 31, 2014
  $ (143 )   $ (317 )   $ (460 )
Change in fair value
    118             118  
Income tax deferred
    (46 )           (46 )
Balance at March 31, 2015
  $ (71 )   $ (317 )   $ (388 )