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Note 7 - Premises and Equipment (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
2019
    
2018
  
Cost:
                
Land
   $
2,190,649
     $
2,190,649
  
Buildings
    
7,561,302
      
7,427,612
  
Furniture and equipment
    
1,499,063
      
1,519,998
  
     
11,251,014
      
11,138,259
  
Less: Accumulated depreciation
    
4,733,092
      
4,517,179
  
    $
6,517,922
     $
6,621,080