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Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs $ 881,520 $ 844,157 $ 844,460
Commercial, Financial And Agricultural Loan [Member]      
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs 80,796 96,688 108,006
Construction Loans [Member]      
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs 100,061 95,282 89,250
Residential Mortgage [Member]      
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs 44,987 43,928 49,215
Commercial Real Estate [Member]      
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs 620,130 573,258 561,932
Home Equity Line of Credit [Member]      
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs 27,233 26,442 27,618
Consumer Portfolio Segment [Member]      
Financing Receivable, Past Due [Line Items]      
Total loans, net of deferred loan fees and costs $ 8,313 $ 8,559 $ 8,439