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Note A - Summary of Significant Accounting Policies (Details Textual)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
shares
Jan. 01, 2019
USD ($)
Number of Stores 22      
Number of Reportable Segments 2      
Loans Held-for-sale, Fair Value Disclosure $ 0 $ 108    
Percentage of Loan Portfolio 100.00% 100.00%    
Due from Banks $ 38,095      
Repossessed Assets, Total 540 $ 430    
Goodwill, Impairment Loss 0 0  
Servicing Asset, Total $ 357 $ 368    
Weighted Average Number of Shares Outstanding, Basic and Diluted | shares 4,767,279 4,725,971 4,685,067  
Weighted Average Number Diluted Shares Outstanding Adjustment, Total | shares 0 0 0  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   21.00% 34.00%  
Restricted Cash and Cash Equivalents, Total $ 38,794 $ 60,167    
Finance Lease, Liability, Total 0      
Operating Lease, Right-of-Use Asset 1,053    
Operating Lease, Liability, Total $ 1,053    
Accounting Standards Update 2016-02 [Member]        
Operating Lease, Right-of-Use Asset       $ 1,280
Operating Lease, Liability, Total       $ 1,280
Equipment Furniture and Fixtures [Member] | Minimum [Member]        
Property, Plant and Equipment, Useful Life 3 years      
Equipment Furniture and Fixtures [Member] | Maximum [Member]        
Property, Plant and Equipment, Useful Life 8 years      
Building and Building Improvements [Member] | Minimum [Member]        
Property, Plant and Equipment, Useful Life 7 years      
Building and Building Improvements [Member] | Maximum [Member]        
Property, Plant and Equipment, Useful Life 39 years      
Unsecured [Member]        
Percentage of Loan Portfolio 5.00% 5.02%    
Consumer Portfolio Segment [Member]        
Period of Actual Loss History Experienced 3 years      
Percentage of Loan Portfolio 18.16% 18.46%    
Commercial Portfolio Segment [Member]        
Period of Actual Loss History Experienced 5 years      
Percentage of Loan Portfolio 12.94% 14.57%