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Note 14 - Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
Unrealized
Gains
(Losses)
On Securities
 
 
Changes in fair value of derivative contracts designated as hedge transactions
 
 
Adjustments
For Pension Plans
 
 
Total
Accumulated
Other
Comprehensive
Loss, Net
 
Balance January 1, 2014
   $
(2,552
)
   $
—
     $
(23,747
)
   $
(26,299
)
2014 change
    
1,143
      
—
      
(6,875
)
    
(5,732
)
Balance December 31, 2014
    
(1,409
)
    
—
      
(30,622
)
    
(32,031
)
2015 change
    
250
      
—
      
(850
)
    
(600
)
Balance December 31, 2015
    
(1,159
)
    
—
      
(31,472
)
    
(32,631
)
2016 change
    
2,613
      
(5,260
)
    
676
      
(1,971
)
Balance December 31, 2016
   $
1,454
     $
(5,260
)
   $
(30,796
)
   $
(34,602
)
 
 
Income Tax Effect of:
 
 
 
Unrealized
Gains
(Losses)
On Securities
 
 
Changes in fair value of derivative contracts designated as hedge transactions
 
 
Adjustments
For Pension Plans
 
 
Total
Accumulated
Other
Comprehensive
Loss, Net
 
Balance January 1, 2014
   $
619
     $
—
     $
5,764
     $
6,383
  
2014 change
    
6
      
—
      
4,653
      
4,659
  
Balance December 31, 2014
    
625
      
—
      
10,417
      
11,042
  
2015 change
    
6
      
—
      
213
      
219
  
Balance December 31, 2015
    
631
      
—
      
10,630
      
11,261
  
2016 change
    
(4
)
    
—
      
(510
)
    
(514
)
Balance December 31, 2016
   $
627
     $
—
     $
10,120
     $
10,747