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Note 14 - Accumulated Other Comprehensive Income (Loss) (Tables)
 9 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
September 30, 2018
    
December 31, 2017
  
                 
Beginning Balance
  
$
(6,491
)
   $
(5,022
 )
                 
Other Comprehensive Income Before Reclassification
  
 
(5,760
)
    
(401
 )
                 
Amounts Reclassified from Accumulated Other Comprehensive Income
  
 
(92
)
    
-
  
TCJ Act
  
 
-
     
(1,068
 )
                 
Net Current Period Other Comprehensive Income
  
 
(5,852
)
    
(1,469
 )
                 
Ending Balance
  
$
(12,343
)
   $
(6,491
 )