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Note 16 - Components of Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Comprehensive Income (Loss) Note [Text Block]
Note 
1
6
:
Components of Accumulated Other Comprehensive Income
(Loss)
The following table summarizes the activity related to each component of accumulated other comprehensive income (loss) for the years ended
December 31, 2017,
2018
and
2019:
 
   
Net Unrealized
Gain (Loss) on
Securities
  
Adjustments Related
to Pension Benefits
  
Accumulated Other Comprehensive
Income (Loss)
Balance at December 31, 201
6
   $
(3,588
)
   $
(5,071
)
   $
(8,659
)
Unrealized holding loss on available for sale securities net of tax of $296
    
546
      
---
      
546
  
Reclassification adjustment, net of tax of ($4)
    
(6
)
    
---
      
(6
)
Net pension gain, net of tax of $115
    
---
      
213
      
213
  
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($38)
    
---
      
(71
)
    
(71
)
Reclassification of stranded tax effects from change in tax rate
    
(656
)
    
(1,062
)
    
(1,718
)
Balance at December 31, 201
7
   $
(3,704
)
   $
(5,991
)
   $
(9,695
)
Unrealized holding gain on available for sale securities net of tax of ($595)
    
(2,246
)
    
---
      
(2,246
)
Transfer from held-to-maturity to available-for-sale securities, net of tax $237
    
891
      
---
      
891
  
Reclassification adjustment, net of tax of ($4)
    
(13
)
    
---
      
(13
)
Net pension loss, net of tax of ($249)
    
---
      
(936
)
    
(936
)
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($24)
    
---
      
(86
)
    
(86
)
Balance at December 31, 201
8
   $
(5,072
)
   $
(7,013
)
   $
(12,085
)
Unrealized holding loss on available for sale securities net of tax of $1,486
    
5,595
      
---
      
5,595
  
Reclassification adjustment, net of tax of ($119)
    
(447
)
    
---
      
(447
)
Net pension loss, net of tax of ($394)
    
---
      
(1,482
)
    
(1,482
)
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($23)
    
---
      
(87
)
    
(87
)
Balance at December 31, 201
9
  
$
76
    
$
(8,582
)
  
$
(8,506
)
 
The following table provides information regarding reclassifications out of accumulated other comprehensive income (loss) for the years ended
December 31, 2019,
2018
and
2017:
 
   
December 31,
   
201
9
  
2018
  
2017
Component of Accumulated Other Comprehensive Income
(Loss)
  
 
 
 
  
 
 
 
  
 
 
 
Reclassification out of unrealized gains and losses on available-for-sale securities:
                        
Realized securities gain, net
  
$
(566
)
   $
(17
)
   $
(10
)
Income tax benefit
  
 
(119
)
    
(4
)
    
(4
)
Realized gain on available-for-sale securities, net of tax, reclassified out of accumulated other comprehensive income (loss)
  
$
(447
)
   $
(13
)
   $
(6
)
Amortization of defined benefit pension items:
                        
Prior service costs
(1)
  
$
(110
)
   $
(110
)
   $
(109
)
Income tax benefit
  
 
(23
)
    
(24
)
    
(38
)
Amortization of defined benefit pension items, net of tax, reclassified out of accumulated other comprehensive income (loss)
  
$
(87
)
   $
(86
)
   $
(71
)
 
 
(
1
)
This accumulated other comprehensive income (loss) component is included in the computation of net periodic benefit cost. (For additional information, see Note
8,
Employee Benefit Plans.)