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Loans (Details 4) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment $ 875,797 $ 863,702 $ 869,066
Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 866,281 854,204  
Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 1,668 1,626  
Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 7,848 7,872  
Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Commercial, Financial And Agricultural Loan [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 70,565 69,952 110,776
Commercial, Financial And Agricultural Loan [Member] | Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 70,473 69,833  
Commercial, Financial And Agricultural Loan [Member] | Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 92 119  
Commercial, Financial And Agricultural Loan [Member] | Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Commercial, Financial And Agricultural Loan [Member] | Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Construction Loans [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 96,419 94,969 104,065
Construction Loans [Member] | Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 96,418 94,966  
Construction Loans [Member] | Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Construction Loans [Member] | Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 1 3  
Construction Loans [Member] | Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Residential Mortgage [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 42,675 45,498 38,947
Residential Mortgage [Member] | Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 42,246 45,049  
Residential Mortgage [Member] | Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 377 305  
Residential Mortgage [Member] | Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 52 144  
Residential Mortgage [Member] | Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Commercial Real Estate [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 627,621 617,464 582,083
Commercial Real Estate [Member] | Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 620,089 610,001  
Commercial Real Estate [Member] | Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 1,002 1,009  
Commercial Real Estate [Member] | Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 6,530 6,454  
Commercial Real Estate [Member] | Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Home Equity Line of Credit [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 27,712 27,116 25,068
Home Equity Line of Credit [Member] | Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 26,347 25,751  
Home Equity Line of Credit [Member] | Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 175 171  
Home Equity Line of Credit [Member] | Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 1,190 1,194  
Home Equity Line of Credit [Member] | Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment  
Consumer Portfolio Segment [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 10,805 8,703 $ 8,127
Consumer Portfolio Segment [Member] | Pass [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 10,708 8,604  
Consumer Portfolio Segment [Member] | Special Mention [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 22 22  
Consumer Portfolio Segment [Member] | Substandard [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment 75 77  
Consumer Portfolio Segment [Member] | Doubtful [Member]      
Financing Receivable, Past Due [Line Items]      
Loans held-for-investment