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SECURITIES (Schedule of financing receivable credit quality indicators) (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 85,490 $ 88,890
Obligations of states and political subdivisions    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 85,490 88,890
Standard & Poor's, AAA Rating | Obligations of states and political subdivisions    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 3,207 0
Standard & Poor's, AA, AA+, AA- | Obligations of states and political subdivisions    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 62,526 64,385
Standard & Poor's, A+, A, A- Rating | Obligations of states and political subdivisions    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 15,006 18,353
Standard & Poor's, BBB Rating | Obligations of states and political subdivisions    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 4,751 4,208
Standard & Poor's, Not Rated | Obligations of states and political subdivisions    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 0 $ 1,944