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Note A - Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Composition of Loan Portfolio [Table Text Block ]
   
% of Total Loans
  
   
2019
    
2018
  
Residential real estate loans
    
40.15
%
    
39.13
%
Commercial real estate loans
    
28.75
%
    
27.84
%
Consumer loans
    
18.16
%
    
18.46
%
Commercial and industrial loans
    
12.94
%
    
14.57
%
     
100.00
%
    
100.00
%