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Loans, net and allowance for credit losses - Allocation of Allowance for Loan Losses and Related Loans by Major Classification of Loans (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Allowance for loan losses: |  |  |
Beginning Balance | $ 39,007 | $ 41,776 |
Charge-offs | (976) | (1,233) |
Recoveries | 168 | 311 |
Provisions (Credits) | 1,387 | 200 |
Ending balance | 39,586 | 41,054 |
Ending balance: individually evaluated for impairment | 1,263 |  | $ 1,332
Ending balance: collectively evaluated for impairment | 38,323 |  | 37,675
Loans receivable: |  |  |
Loans | 4,190,202 |  | 4,066,896
Ending balance: collectively evaluated for impairment | 4,178,379 |  | 4,056,693
Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 9,507 |  | 8,565
Non-real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 2,316 |  | 1,638
Commercial |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 6,036 | 6,004 |
Charge-offs |  | (157) |
Recoveries | 21 | 13 |
Provisions (Credits) | (72) | 562 |
Ending balance | 5,985 | 6,422 |
Ending balance: individually evaluated for impairment | 478 |  | 404
Ending balance: collectively evaluated for impairment | 5,507 |  | 5,632
Loans receivable: |  |  |
Loans | 675,446 |  | 667,948
Ending balance: collectively evaluated for impairment | 673,797 |  | 665,993
Commercial | Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 322 |  | 1,470
Commercial | Non-real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 1,327 |  | 485
Municipal |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 1,413 | 1,072 |
Provisions (Credits) | 77 | 177 |
Ending balance | 1,490 | 1,249 |
Ending balance: collectively evaluated for impairment | 1,490 |  | 1,413
Loans receivable: |  |  |
Loans | 212,586 |  | 202,303
Ending balance: collectively evaluated for impairment | 212,586 |  | 202,303
Real estate |  |  |
Loans receivable: |  |  |
Loans | 3,041,183 |  | 2,916,419
Commercial real estate |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 19,998 | 21,804 |
Recoveries | 3 |  |
Provisions (Credits) | 2,170 | (943) |
Ending balance | 22,171 | 20,861 |
Ending balance: individually evaluated for impairment | 598 |  | 451
Ending balance: collectively evaluated for impairment | 21,573 |  | 19,547
Loans receivable: |  |  |
Loans | 2,423,027 |  | 2,314,110
Ending balance: collectively evaluated for impairment | 2,415,529 |  | 2,310,054
Commercial real estate | Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 7,498 |  | 4,056
Residential real estate |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 4,963 | 4,924 |
Charge-offs |  | (92) |
Recoveries | 9 | 1 |
Provisions (Credits) | 99 | 236 |
Ending balance | 5,071 | 5,069 |
Ending balance: individually evaluated for impairment |  |  | 78
Ending balance: collectively evaluated for impairment | 5,071 |  | 4,885
Loans receivable: |  |  |
Loans | 618,156 |  | 602,309
Ending balance: collectively evaluated for impairment | 616,469 |  | 599,270
Residential real estate | Real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | 1,687 |  | 3,039
Consumer |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 1,759 | 2,540 |
Charge-offs | (594) | (387) |
Recoveries | 101 | 173 |
Provisions (Credits) | 444 | (45) |
Ending balance | 1,710 | 2,281 |
Ending balance: collectively evaluated for impairment | 1,710 |  | 1,759
Loans receivable: |  |  |
Loans | 101,318 |  | 111,238
Ending balance: collectively evaluated for impairment | 101,318 |  | 111,238
Equipment Financing |  |  |
Allowance for loan losses: |  |  |
Beginning Balance | 4,838 | 5,432 |
Charge-offs | (382) | (597) |
Recoveries | 34 | 124 |
Provisions (Credits) | (1,331) | 213 |
Ending balance | 3,159 | $ 5,172 |
Ending balance: individually evaluated for impairment | 187 |  | 399
Ending balance: collectively evaluated for impairment | 2,972 |  | 4,439
Loans receivable: |  |  |
Loans | 159,669 |  | 168,988
Ending balance: collectively evaluated for impairment | 158,680 |  | 167,835
Equipment Financing | Non-real estate |  |  |
Loans receivable: |  |  |
Ending balance: individually evaluated for impairment | $ 989 |  | $ 1,153

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