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Note 11 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
   
2019
   
2018
 
Deferred Tax Assets
     
 
     
 
Allowance for loan losses
  $
1,036
    $
1,052
 
Unrealized losses on securities available for sale    
     
481
 
Post-retirement benefits    
46
     
 
Core deposit intangible
   
391
     
371
 
Unvested stock-based compensation
   
18
     
14
 
Limited partnership investments
   
13
     
14
 
Lease liability
   
67
     
 
Loan origination fees, net
   
71
     
58
 
    $
1,642
    $
1,990
 
Deferred Tax Liabilities
     
 
     
 
Depreciation
  $
741
    $
682
 
Right of use asset
   
68
     
 
Discount accretion
   
     
1
 
Unrealized gains on securities available for sale
   
192
     
 
    $
1,001
    $
683
 
Net deferred tax assets
  $
641
    $
1,307
 
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   
2019
   
2018
 
Current tax expense
  $
2,246
    $
2,152
 
Deferred tax (benefit) expense
   
(8
)    
135
 
    $
2,238
    $
2,287
 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
2019
   
2018
 
Computed tax expense at statutory federal rate
  $
2,477
    $
2,609
 
Increase in income taxes resulting from:
               
Other
   
14
     
12
 
Decrease in income taxes resulting from:
               
Tax-exempt interest and dividend income
   
(157
)    
(158
)
Income from bank owned life insurance
   
(96
)    
(176
)
    $
2,238
    $
2,287