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Loans (Details 5) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with allowance $ 123 $ 256 $ 453
Related Allowance 2 6 14
Recorded Investment 6,113 3,997 4,381
Unpaid Principal Balance 8,649 6,728 7,027
Average Recorded Investment 6,375 4,431 4,128
Interest Income Recognized 403 263 160
Commercial, Financial And Agricultural Loan [Member]      
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with no allowance 400
Unpaid Principal Balance, with no Allowance 400
Average Recorded Investment, with no Allownace 600
Interest Income Recognized, with no allownace 49
Recorded Investment, with allowance
Unpaid Principal Balance, with allowance
Related Allowance
Average Recorded Investment, with Allownace
Interest Income Recognized, with allownace
Recorded Investment 400
Unpaid Principal Balance 400
Average Recorded Investment 600
Interest Income Recognized 49
Construction Loans [Member]      
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with no allowance
Unpaid Principal Balance, with no Allowance
Average Recorded Investment, with no Allownace
Interest Income Recognized, with no allownace
Recorded Investment, with allowance
Unpaid Principal Balance, with allowance  
Related Allowance
Average Recorded Investment, with Allownace
Interest Income Recognized, with allownace
Recorded Investment
Unpaid Principal Balance
Average Recorded Investment
Interest Income Recognized
Residential Mortgage [Member]      
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with no allowance 440 392 322
Unpaid Principal Balance, with no Allowance 499 460 371
Average Recorded Investment, with no Allownace 440 439 483
Interest Income Recognized, with no allownace 1 19 9
Recorded Investment, with allowance
Unpaid Principal Balance, with allowance
Related Allowance
Average Recorded Investment, with Allownace
Interest Income Recognized, with allownace
Recorded Investment 440 392 322
Unpaid Principal Balance 499 460 371
Average Recorded Investment 440 439 483
Interest Income Recognized 1 19 9
Commercial Real Estate [Member]      
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with no allowance 5,508 2,879 3,577
Unpaid Principal Balance, with no Allowance 7,980 5,539 6,173
Average Recorded Investment, with no Allownace 5,770 2,961 3,232
Interest Income Recognized, with no allownace 388 170 128
Recorded Investment, with allowance 123 256 453
Unpaid Principal Balance, with allowance 123 256 453
Related Allowance 2 6 14
Average Recorded Investment, with Allownace 123 355 380
Interest Income Recognized, with allownace 11 23 21
Recorded Investment 5,631 3,135 4,030
Unpaid Principal Balance 8,103 5,795 6,626
Average Recorded Investment 5,893 3,316 3,612
Interest Income Recognized 399 193 149
Home Equity Line of Credit [Member]      
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with no allowance 42 70 29
Unpaid Principal Balance, with no Allowance 47 73 30
Average Recorded Investment, with no Allownace 42 76 33
Interest Income Recognized, with no allownace 3 2 2
Recorded Investment, with allowance
Unpaid Principal Balance, with allowance  
Related Allowance
Average Recorded Investment, with Allownace
Interest Income Recognized, with allownace
Recorded Investment 42 70 29
Unpaid Principal Balance 47 73 30
Average Recorded Investment 42 76 33
Interest Income Recognized 3 2 2
Consumer Portfolio Segment [Member]      
Financing Receivable, Past Due [Line Items]      
Recorded Investment, with no allowance
Unpaid Principal Balance, with no Allowance
Average Recorded Investment, with no Allownace
Interest Income Recognized, with no allownace
Recorded Investment, with allowance
Unpaid Principal Balance, with allowance
Related Allowance
Average Recorded Investment, with Allownace
Interest Income Recognized, with allownace
Recorded Investment
Unpaid Principal Balance
Average Recorded Investment
Interest Income Recognized