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Note 7 - Income Taxes (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
For the Three Months Ended March 31,
 
   
2020
   
2019
 
(dollars in thousands)
 
Amount
   
%
   
Amount
   
%
 
Provision at statutory tax rates
  $
528
     
21.00
%   $
670
     
21.00
%
Add (deduct):
                               
Tax effects of tax free interest income
   
(106
)    
(4.22
)%    
(106
)    
(3.32
)%
Non-deductible interest expense
   
5
     
0.19
%    
5
     
0.15
%
Bank-owned life insurance
   
(27
)    
(1.07
)%    
(28
)    
(0.86
)%
Other items, net
   
52
     
2.07
%    
14
     
0.43
%
Income tax provision
  $
452
     
17.97
%   $
555
     
17.40
%