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Note 16 - Accumulated Other Comprehensive Income (Loss) (Tables)
 9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
September 30, 2019
    
December 31, 2018
  
                 
Beginning Balance
  
$
(8,190
)
   $
(6,492
 )
                 
Other Comprehensive Income Before Reclassification
  
 
9,827
     
(1,606
 )
                 
Amounts Reclassified from Accumulated Other Comprehensive Income
  
 
(78
)
    
(92
 )
                 
Net Current Period Other Comprehensive Income
  
 
9,749
     
(1,698
 )
                 
Ending Balance
  
$
1,559
    $
(8,190
 )