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Loans and Allowance for Credit Losses - Loans - Current, Past Due, and Non-Accrual Loans by Categories of loans and Restructured Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | $ 209,684 | $ 247,041 |
Non-accrual | 338 | 4,512 | $ 4,127
Total | 210,392 | 253,772 |
Allowance for loan loss | 2,470 | 1,476 | 2,066
Loans and Leases Receivable, Gross | 210,392 | 253,772 |
Financing Receivable, Recorded Investment, Current | 209,684 | 247,041 |
Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 355 | 2,201 |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
90 Days or More and Still Accruing | 15 | 18 |
Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 136,567 | 142,489 |
Non-accrual | 123 | 4,299 |
Total | 136,705 | 148,555 |
Loans and Leases Receivable, Gross | 136,705 | 148,555 |
Financing Receivable, Recorded Investment, Current | 136,567 | 142,489 |
Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due |  | 1,749 |
Real Estate Loan | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
90 Days or More and Still Accruing | 15 | 18 |
Commercial and Industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 17,376 | 27,912 |
Non-accrual | 71 |  |
Total | 17,447 | 27,912 |
Loans and Leases Receivable, Gross | 17,447 | 27,912 |
Financing Receivable, Recorded Investment, Current | 17,376 | 27,912 |
Consumer Loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total | 56,240 | 77,305 |
Loans and Leases Receivable, Gross | 56,240 | 77,305 |
Construction And Land Development [Member] | Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 4,087 | 2,553 |
Total | 4,087 | 2,553 |
Allowance for loan loss | 5 | 9 | 24
Loans and Leases Receivable, Gross | 4,087 | 2,553 |
Financing Receivable, Recorded Investment, Current | 4,087 | 2,553 |
Farmland | Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 342 | 350 |
Total | 342 | 350 |
Allowance for loan loss | 11 | 2 | 2
Loans and Leases Receivable, Gross | 342 | 350 |
Financing Receivable, Recorded Investment, Current | 342 | 350 |
Single-family | Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 77,981 | 81,057 |
Non-accrual | 123 | 270 | 790
Total | 78,119 | 82,520 |
Allowance for loan loss | 1,357 | 513 | 849
Loans and Leases Receivable, Gross | 78,119 | 82,520 |
Financing Receivable, Recorded Investment, Current | 77,981 | 81,057 |
Single-family | Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due |  | 1,175 |
Single-family | Real Estate Loan | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
90 Days or More and Still Accruing | 15 | 18 |
Multi-family | Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 5,428 | 6,105 |
Non-accrual |  |  | 24
Total | 5,428 | 6,105 |
Allowance for loan loss | 105 | 39 | 40
Loans and Leases Receivable, Gross | 5,428 | 6,105 |
Financing Receivable, Recorded Investment, Current | 5,428 | 6,105 |
Commercial | Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 48,729 | 52,424 |
Non-accrual |  | 4,029 | 3,139
Total | 48,729 | 57,027 |
Allowance for loan loss | 278 | 218 | 241
Loans and Leases Receivable, Gross | 48,729 | 57,027 |
Financing Receivable, Recorded Investment, Current | 48,729 | 52,424 |
Commercial | Real Estate Loan | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due |  | 574 |
Commercial | Commercial and Industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total | 17,447 | 27,912 |
Loans and Leases Receivable, Gross | 17,447 | 27,912 |
Commercial | Consumer Loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 55,741 | 76,640 |
Non-accrual | 144 | 213 |
Total | 56,240 | 77,305 |
Loans and Leases Receivable, Gross | 56,240 | 77,305 |
Financing Receivable, Recorded Investment, Current | 55,741 | 76,640 |
Commercial | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 355 | 452 |
Commercial and industrial | Commercial and Industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 10,003 | 10,800 |
Total | 10,003 | 10,800 |
Allowance for loan loss | 115 | 67 | 69
Loans and Leases Receivable, Gross | 10,003 | 10,800 |
Financing Receivable, Recorded Investment, Current | 10,003 | 10,800 |
SBA Guaranty | Real Estate Loan |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Non-accrual | 71 |  |
SBA Guaranty | Commercial and Industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 6,326 | 7,200 |
Non-accrual | 71 |  |
Total | 6,397 | 7,200 |
Allowance for loan loss | 30 | 48 | 25
Loans and Leases Receivable, Gross | 6,397 | 7,200 |
Financing Receivable, Recorded Investment, Current | 6,326 | 7,200 |
Comm SBA PPP |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total |  | 10,000 |
Loans and Leases Receivable, Gross |  | 10,000 |
Comm SBA PPP | Commercial and Industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 1,047 | 9,912 |
Total | 1,047 | 9,912 |
Loans and Leases Receivable, Gross | 1,047 | 9,912 |
Financing Receivable, Recorded Investment, Current | 1,047 | 9,912 |
Consumer and Indirect | Consumer Loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 2,086 | 3,029 |
Non-accrual |  | 34 | 51
Total | 2,090 | 3,063 |
Allowance for loan loss | 36 | 11 | 11
Loans and Leases Receivable, Gross | 2,090 | 3,063 |
Financing Receivable, Recorded Investment, Current | 2,086 | 3,029 |
Consumer and Indirect | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 4 |  |
Automobile | Consumer Loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Current | 53,655 | 73,611 |
Non-accrual | 144 | 179 | 123
Total | 54,150 | 74,242 |
Allowance for loan loss | 533 | 569 | $ 805
Loans and Leases Receivable, Gross | 54,150 | 74,242 |
Financing Receivable, Recorded Investment, Current | 53,655 | 73,611 |
Automobile | Consumer Loans | Financing Receivables 30 To 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | $ 351 | $ 452 |

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