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Loans and Allowance for Credit Losses - Loans - Allowance by Loan Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | $ 1,476 |  |  |  | $ 2,066 | $ 1,476 | $ 2,066
Impact of ASC 326 adoption | $ 1,574 |  |  |  |  |  |  |  | 1,574 |
Charged off |  |  |  |  |  |  |  |  | (253) | (392)
Recoveries |  |  |  |  |  |  |  |  | 648 | 491
Provision for loan losses | (382) | $ (122) | $ (67) | (404) | $ (427) | $ (669) | $ 487 | (80) | (975) | (689)
Balance, end of year | 2,470 |  |  |  | 1,476 |  |  |  | 2,470 | 1,476
Individually evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment, Balance in allowance | 10 |  |  |  | 11 |  |  |  | 10 | 11
Individually evaluated for impairment, Related loan balance | 36 |  |  |  | 4,664 |  |  |  | 36 | 4,664
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 2,460 |  |  |  | 1,465 |  |  |  | 2,460 | 1,465
Collectively evaluated for impairment, Related loan balance | 210,356 |  |  |  | 249,108 |  |  |  | 210,356 | 249,108
Real Estate Loan |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment, Balance in allowance | 10 |  |  |  | 11 |  |  |  | 10 | 11
Construction And Land Development [Member] | Real Estate Loan |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 9 |  |  |  | 24 | 9 | 24
Impact of ASC 326 adoption | 16 |  |  |  |  |  |  |  | 16 |
Provision for loan losses |  |  |  |  |  |  |  |  | (20) | (15)
Balance, end of year | 5 |  |  |  | 9 |  |  |  | 5 | 9
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 5 |  |  |  | 9 |  |  |  | 5 | 9
Collectively evaluated for impairment, Related loan balance | 4,087 |  |  |  | 2,553 |  |  |  | 4,087 | 2,553
Farmland | Real Estate Loan |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 2 |  |  |  | 2 | 2 | 2
Impact of ASC 326 adoption | 9 |  |  |  |  |  |  |  | 9 |
Balance, end of year | 11 |  |  |  | 2 |  |  |  | 11 | 2
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 11 |  |  |  | 2 |  |  |  | 11 | 2
Collectively evaluated for impairment, Related loan balance | 342 |  |  |  | 350 |  |  |  | 342 | 350
Single-family | Real Estate Loan |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 513 |  |  |  | 849 | 513 | 849
Impact of ASC 326 adoption | 854 |  |  |  |  |  |  |  | 854 |
Recoveries |  |  |  |  |  |  |  |  | 408 | 266
Provision for loan losses |  |  |  |  |  |  |  |  | (418) | (602)
Balance, end of year | 1,357 |  |  |  | 513 |  |  |  | 1,357 | 513
Individually evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment, Balance in allowance | 10 |  |  |  | 11 |  |  |  | 10 | 11
Individually evaluated for impairment, Related loan balance | 36 |  |  |  | 132 |  |  |  | 36 | 132
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 1,347 |  |  |  | 513 |  |  |  | 1,347 | 513
Collectively evaluated for impairment, Related loan balance | 78,083 |  |  |  | 82,388 |  |  |  | 78,083 | 82,388
Multi-family | Real Estate Loan |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 39 |  |  |  | 40 | 39 | 40
Impact of ASC 326 adoption | 63 |  |  |  |  |  |  |  | 63 |
Provision for loan losses |  |  |  |  |  |  |  |  | 3 | (1)
Balance, end of year | 105 |  |  |  | 39 |  |  |  | 105 | 39
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 105 |  |  |  | 39 |  |  |  | 105 | 39
Collectively evaluated for impairment, Related loan balance | 5,428 |  |  |  | 6,105 |  |  |  | 5,428 | 6,105
Commercial and industrial | Commercial and Industrial |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 67 |  |  |  | 69 | 67 | 69
Impact of ASC 326 adoption | 120 |  |  |  |  |  |  |  | 120 |
Recoveries |  |  |  |  |  |  |  |  |  | 20
Provision for loan losses |  |  |  |  |  |  |  |  | (72) | (22)
Balance, end of year | 115 |  |  |  | 67 |  |  |  | 115 | 67
Individually evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment, Related loan balance |  |  |  |  | 4,493 |  |  |  |  | 4,493
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 115 |  |  |  | 67 |  |  |  | 115 | 67
Collectively evaluated for impairment, Related loan balance | 10,003 |  |  |  | 6,307 |  |  |  | 10,003 | 6,307
Commercial | Real Estate Loan |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 218 |  |  |  | 241 | 218 | 241
Impact of ASC 326 adoption | 199 |  |  |  |  |  |  |  | 199 |
Provision for loan losses |  |  |  |  |  |  |  |  | (139) | (23)
Balance, end of year | 278 |  |  |  | 218 |  |  |  | 278 | 218
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 278 |  |  |  | 218 |  |  |  | 278 | 218
Collectively evaluated for impairment, Related loan balance | 48,729 |  |  |  | 57,027 |  |  |  | 48,729 | 57,027
Commercial | Commercial and Industrial |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Related loan balance |  |  |  |  | 9,912 |  |  |  |  | 9,912
SBA Guaranty | Commercial and Industrial |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 48 |  |  |  | 25 | 48 | 25
Impact of ASC 326 adoption | (6) |  |  |  |  |  |  |  | (6) |
Provision for loan losses |  |  |  |  |  |  |  |  | (12) | 23
Balance, end of year | 30 |  |  |  | 48 |  |  |  | 30 | 48
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 30 |  |  |  | 48 |  |  |  | 30 | 48
Collectively evaluated for impairment, Related loan balance | 6,397 |  |  |  | 7,200 |  |  |  | 6,397 | 7,200
Comm SBA PPP | Commercial and Industrial |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Related loan balance | 1,047 |  |  |  |  |  |  |  | 1,047 |
Consumer and Indirect | Consumer Loans |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | 11 |  |  |  | 11 | 11 | 11
Impact of ASC 326 adoption | 46 |  |  |  |  |  |  |  | 46 |
Charged off |  |  |  |  |  |  |  |  | (2) |
Recoveries |  |  |  |  |  |  |  |  |  | 6
Provision for loan losses |  |  |  |  |  |  |  |  | (19) | (6)
Balance, end of year | 36 |  |  |  | 11 |  |  |  | 36 | 11
Individually evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment, Balance in allowance |  |  |  |  | 11 |  |  |  |  | 11
Individually evaluated for impairment, Related loan balance |  |  |  |  | 39 |  |  |  |  | 39
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 36 |  |  |  |  |  |  |  | 36 |
Collectively evaluated for impairment, Related loan balance | 2,090 |  |  |  | 3,024 |  |  |  | 2,090 | 3,024
Automobile | Consumer Loans |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  |  | $ 569 |  |  |  | $ 805 | 569 | 805
Impact of ASC 326 adoption | 273 |  |  |  |  |  |  |  | 273 |
Charged off |  |  |  |  |  |  |  |  | (251) | (392)
Recoveries |  |  |  |  |  |  |  |  | 240 | 199
Provision for loan losses |  |  |  |  |  |  |  |  | (298) | (43)
Balance, end of year | 533 |  |  |  | 569 |  |  |  | 533 | 569
Collectively evaluated for impairment: |  |  |  |  |  |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 533 |  |  |  | 569 |  |  |  | 533 | 569
Collectively evaluated for impairment, Related loan balance | $ 54,150 |  |  |  | $ 74,242 |  |  |  | $ 54,150 | $ 74,242

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