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Note A - Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Number of Reportable Segments   2    
Percentage of Loan Portfolio   100.00% 100.00%  
Due from Banks   $ 60,872    
Repossessed Assets   1,574 $ 2,129  
Servicing Asset   $ 360 $ 387  
Weighted Average Number of Shares Outstanding, Basic   4,685,067 4,351,748 4,117,675
Weighted Average Number of Shares Outstanding, Diluted   0 0 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   34.00%    
Restricted Cash and Cash Equivalents   $ 61,915 $ 28,102  
Goodwill, Impairment Loss   $ 0 $ 0  
Scenario, Forecast [Member]        
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%      
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   4.86% 5.61%  
Consumer Portfolio Segment [Member]        
Period of Actual Loss History Experienced   3 years    
Percentage of Loan Portfolio   18.15% 18.27%  
Commercial Portfolio Segment [Member]        
Period of Actual Loss History Experienced   5 years    
Percentage of Loan Portfolio   13.92% 13.69%