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Note A - Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Jan. 01, 2019
Number of Stores   25      
Number of Reportable Segments   2      
Loans Held-for-sale, Fair Value Disclosure   $ 108 $ 0    
Percentage of Loan Portfolio   100.00% 100.00%    
Due from Banks   $ 56,071      
Repossessed Assets, Total   430 $ 1,574    
Servicing Asset, Total   $ 368 $ 360    
Weighted Average Number of Shares Outstanding, Basic, Total   4,725,971 4,685,067 4,351,748  
Weighted Average Number Diluted Shares Outstanding Adjustment, Total   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   $ 60,167 $ 61,915    
Subsequent Event [Member]          
Operating Lease, Right-of-Use Asset         $ 1,484
Operating Lease, Liability, Total         $ 1,484
Accounting Standards Update 2018-02 [Member]          
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect $ 173        
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   5.02% 4.86%    
Consumer Portfolio Segment [Member]          
Period of Actual Loss History Experienced   3 years      
Percentage of Loan Portfolio   18.46% 18.15%    
Commercial Portfolio Segment [Member]          
Period of Actual Loss History Experienced   5 years      
Percentage of Loan Portfolio   14.57% 13.92%