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Allowance for Credit Losses - Loans - Loan portfolio and allowance for credit losses (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Loans: |  |  |  |  |  |
Individually evaluated | $ 12,570 |  | $ 10,834 |  |  |
Collectively evaluated | 1,027,068 |  | 1,027,437 |  |  |
Total loans | 1,039,638 |  | 1,038,271 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 1,859 |  | 414 |  |  |
General reserve allocation | 12,561 |  | 14,639 |  |  |
Total allowance for credit losses | 14,420 | $ 14,611 | 15,053 | $ 12,313 | $ 12,221 | $ 10,743
Other commercial and industrial |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 1,477 |  | 1,694 |  |  |
Collectively evaluated | 138,281 |  | 157,730 |  |  |
Total loans | 139,758 |  | 159,424 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 277 |  | 414 |  |  |
General reserve allocation | 2,161 |  | 2,616 |  |  |
Total allowance for credit losses | 2,438 | 2,678 | 3,030 | 2,744 | 2,849 |
Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 10,411 |  | 8,780 |  |  |
Collectively evaluated | 231,108 |  | 231,506 |  |  |
Total loans | 241,519 |  | 240,286 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 1,582 |  | 0 |  |  |
General reserve allocation | 3,059 |  | 3,428 |  |  |
Total allowance for credit losses | 4,641 | 4,665 | 3,428 | 3,183 | 3,087 | 5,972
Residential mortgages |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 513 |  | 173 |  |  |
Collectively evaluated | 178,784 |  | 174,497 |  |  |
Total loans | 179,297 |  | 174,670 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 0 |  | 0 |  |  |
General reserve allocation | 852 |  | 1,021 |  |  |
Total allowance for credit losses | 852 | 852 | 1,021 | 1,027 | 1,037 | 1,380
Consumer |  |  |  |  |  |
Loans: |  |  |  |  |  |
Total loans | 11 |  |  |  |  |
Commercial |  |  |  |  |  |
Loans: |  |  |  |  |  |
Total loans | 753,833 |  | 760,826 |  |  |
Commercial | Commercial real estate (owner occupied) |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 158 |  | 187 |  |  |
Collectively evaluated | 80,353 |  | 88,960 |  |  |
Total loans | 80,511 |  | 89,147 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 0 |  | 0 |  |  |
General reserve allocation | 432 |  | 1,529 |  |  |
Total allowance for credit losses | 432 | 371 | 1,529 | 1,544 | 1,517 |
Commercial | Other commercial and industrial |  |  |  |  |  |
Loans: |  |  |  |  |  |
Total loans | 139,758 |  | 159,424 |  |  |
Commercial | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 0 |  | 0 |  |  |
Collectively evaluated | 168,676 |  | 161,961 |  |  |
Total loans | 168,676 |  | 161,961 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 0 |  | 0 |  |  |
General reserve allocation | 3,451 |  | 3,488 |  |  |
Total allowance for credit losses | 3,451 | 3,519 | 3,488 | 1,526 | 1,477 |
Commercial | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 0 |  |  |  |  |
Collectively evaluated | 123,369 |  |  |  |  |
Total loans | 123,369 |  | 110,008 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 0 |  |  |  |  |
General reserve allocation | 1,423 |  |  |  |  |
Total allowance for credit losses | 1,423 | 1,370 | 1,430 | 1,175 | 1,145 |
Commercial | Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Loans: |  |  |  |  |  |
Total loans | 241,519 |  | 240,286 |  |  |
Consumer |  |  |  |  |  |
Loans: |  |  |  |  |  |
Total loans | 285,805 |  | 277,445 |  |  |
Consumer | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated |  |  | 0 |  |  |
Collectively evaluated |  |  | 110,008 |  |  |
Total loans |  |  | 110,008 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation |  |  | 0 |  |  |
General reserve allocation |  |  | 1,430 |  |  |
Total allowance for credit losses |  |  | 1,430 |  |  |
Consumer | Residential mortgages |  |  |  |  |  |
Loans: |  |  |  |  |  |
Total loans | 179,297 |  | 174,670 |  |  |
Consumer | Consumer |  |  |  |  |  |
Loans: |  |  |  |  |  |
Individually evaluated | 11 |  |  |  |  |
Collectively evaluated | 106,497 |  | 102,775 |  |  |
Total loans | 106,508 |  | 102,775 |  |  |
Allowance for loan losses: |  |  |  |  |  |
Specific reserve allocation | 0 |  | 0 |  |  |
General reserve allocation | 1,183 |  | 1,127 |  |  |
Total allowance for credit losses | $ 1,183 | $ 1,156 | $ 1,127 | $ 1,114 | $ 1,109 | $ 85

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