Loans and Allowance for Credit Losses - Loans - Current, Past Due, and Non-Accrual Loans by Categories of loans and Restructured Loans (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Loans and Allowance for Credit Losses - Loans
Non-accrual	$ 527,000	$ 488,000	$ 338,000
Financing Receivable, 90 Days or More Past Due, Still Accruing	0	10,000
Total	176,307,000	186,440,000
Current
Loans and Allowance for Credit Losses - Loans
Total	174,826,000	185,431,000
30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Total	954,000	511,000
90 Days or More and Still Accruing
Loans and Allowance for Credit Losses - Loans
Total		10,000
Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Non-accrual	145,000	104,000
Total	136,230,000	133,323,000
Real Estate Loan | Current
Loans and Allowance for Credit Losses - Loans
Total	135,576,000	133,024,000
Real Estate Loan | 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Total	509,000	185,000
Real Estate Loan | 90 Days or More and Still Accruing
Loans and Allowance for Credit Losses - Loans
Total		10,000
Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Non-accrual	299,000	299,000
Total	16,774,000	15,148,000
Commercial and Industrial | Current
Loans and Allowance for Credit Losses - Loans
Total	16,475,000	14,849,000
Consumer Loans
Loans and Allowance for Credit Losses - Loans
Non-accrual	83,000	85,000
Total	23,303,000	37,969,000
Consumer Loans | Current
Loans and Allowance for Credit Losses - Loans
Total	22,775,000	37,558,000
Consumer Loans | 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Total	445,000	326,000
Construction and Land | Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Total	4,636,000	4,499,000
Construction and Land | Real Estate Loan | Current
Loans and Allowance for Credit Losses - Loans
Total	4,636,000	4,499,000
Farmland | Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Total	325,000	333,000
Farmland | Real Estate Loan | Current
Loans and Allowance for Credit Losses - Loans
Total	325,000	333,000
Single-family Residential | Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Non-accrual	145,000	104,000	123,000
Total	86,887,000	80,251,000
Single-family Residential | Real Estate Loan | Current
Loans and Allowance for Credit Losses - Loans
Total	86,233,000	79,952,000
Single-family Residential | Real Estate Loan | 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Total	509,000	185,000
Single-family Residential | Real Estate Loan | 90 Days or More and Still Accruing
Loans and Allowance for Credit Losses - Loans
Total		10,000
Multi-family | Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Total	5,165,000	5,304,000
Multi-family | Real Estate Loan | Current
Loans and Allowance for Credit Losses - Loans
Total	5,165,000	5,304,000
Commercial | Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Total	39,217,000	42,936,000
Commercial | Real Estate Loan | Current
Loans and Allowance for Credit Losses - Loans
Total	39,217,000	42,936,000
Commercial | Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Total	16,774,000	15,148,000
Commercial and Industrial | Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Non-accrual	299,000	299,000
Total	10,850,000	8,990,000
Commercial and Industrial | Commercial and Industrial | Current
Loans and Allowance for Credit Losses - Loans
Total	10,551,000	8,691,000
SBA Guaranty | Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Non-accrual			71,000
Total	5,924,000	6,158,000
SBA Guaranty | Commercial and Industrial | Current
Loans and Allowance for Credit Losses - Loans
Total	5,924,000	6,158,000
Consumer | Consumer Loans
Loans and Allowance for Credit Losses - Loans
Total	2,039,000	1,521,000
Consumer | Consumer Loans | Current
Loans and Allowance for Credit Losses - Loans
Total	1,981,000	1,521,000
Consumer | Consumer Loans | 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Total	58,000
Automobile | Consumer Loans
Loans and Allowance for Credit Losses - Loans
Non-accrual	83,000	85,000	$ 144,000
Total	21,264,000	36,448,000
Automobile | Consumer Loans | Current
Loans and Allowance for Credit Losses - Loans
Total	20,794,000	36,037,000
Automobile | Consumer Loans | 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Total	$ 387,000	$ 326,000