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Income taxes - Components of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 9,217 | $ 4,789
Lease liability | 2,774 | 2,397
Defined benefit plan | 1,280 | 1,635
Deferred compensation | 1,046 | 694
Investment securities available for sale | 10,681 | 11,270
Purchase accounting | 9,084 |
Built-in loss carryforward | 7,331 |
Other | 1,285 | 339
Total | 42,698 | 21,124
Deferred tax liabilities: |  |
Lease right-of-use assets | 2,684 | 2,313
Premises and equipment, net | 1,974 | 2,109
Purchase accounting |  | 474
Deferred loan costs | 467 | 92
Accrued compensation | 803 | 1,912
Other | 1,082 | 454
Total | 7,010 | 7,354
Net deferred tax asset | 35,688 | $ 13,770
Annual limitation | 4,800 |
Built-in loss carryforwards | $ 33,600 |

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