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Loans, net and allowance for credit losses - Major Classification of Loans Portfolio Summarized by Credit Quality (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | $ 204,124 | $ 597,375
Year 2 | 609,478 | 331,412
Year 3 | 322,467 | 345,156
Year 4 | 312,706 | 789,146
Year 5 | 763,201 | 693,743
Prior | 1,533,987 | 889,070
Revolving Loans Amortized Cost Basis | 443,654 | 420,823
Revolving Loans Converted to Term | 585 | 171
Total | 4,190,202 | 4,066,896
Gross charge-offs, Year 1 |  | 210
Gross charge-offs, Year 2 | 147 | 696
Gross charge-offs, Year 3 | 362 | 1,139
Gross charge-offs, Year 4 | 110 | 1,972
Gross charge-offs, Year 5 | 278 | 173
Gross charge-offs, Prior | 79 | 643
Total | 976 | 4,833
Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 25,430 | 81,546
Year 2 | 77,843 | 70,393
Year 3 | 68,838 | 58,189
Year 4 | 41,949 | 57,219
Year 5 | 53,611 | 39,607
Prior | 131,067 | 94,768
Revolving Loans Amortized Cost Basis | 276,611 | 266,126
Revolving Loans Converted to Term | 97 | 100
Total | 675,446 | 667,948
Gross charge-offs, Year 2 |  | 300
Gross charge-offs, Year 4 |  | 24
Gross charge-offs, Year 5 |  | 57
Gross charge-offs, Prior |  | 493
Total |  | 874
Municipal |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 10,835 | 23,125
Year 2 | 19,850 | 4,324
Year 3 | 4,305 | 1,354
Year 4 | 1,275 | 45,369
Year 5 | 45,089 | 88,165
Prior | 129,271 | 38,331
Revolving Loans Amortized Cost Basis | 1,961 | 1,635
Total | 212,586 | 202,303
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 142,189 | 360,438
Year 2 | 384,049 | 146,991
Year 3 | 147,005 | 176,362
Year 4 | 170,298 | 575,829
Year 5 | 563,359 | 450,704
Prior | 1,015,639 | 603,715
Revolving Loans Converted to Term | 488 | 71
Total | 2,423,027 | 2,314,110
Gross charge-offs, Year 4 |  | 853
Gross charge-offs, Prior |  | 95
Total |  | 948
Residential real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 13,330 | 56,021
Year 2 | 55,364 | 38,109
Year 3 | 37,775 | 40,913
Year 4 | 39,653 | 66,927
Year 5 | 65,554 | 104,792
Prior | 247,752 | 148,990
Revolving Loans Amortized Cost Basis | 158,728 | 146,557
Total | 618,156 | 602,309
Gross charge-offs, Year 4 |  | 92
Total |  | 92
Consumer |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 4,031 | 25,601
Year 2 | 23,407 | 19,907
Year 3 | 17,733 | 24,154
Year 4 | 21,264 | 22,054
Year 5 | 18,763 | 9,751
Prior | 9,766 | 3,266
Revolving Loans Amortized Cost Basis | 6,354 | 6,505
Total | 101,318 | 111,238
Gross charge-offs, Year 2 | 147 | 195
Gross charge-offs, Year 3 | 199 | 361
Gross charge-offs, Year 4 | 72 | 342
Gross charge-offs, Year 5 | 97 | 116
Gross charge-offs, Prior | 79 | 55
Total | 594 | 1,069
Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 8,309 | 50,644
Year 2 | 48,965 | 51,688
Year 3 | 46,811 | 44,184
Year 4 | 38,267 | 21,748
Year 5 | 16,825 | 724
Prior | 492 |
Total | 159,669 | 168,988
Gross charge-offs, Year 1 |  | 210
Gross charge-offs, Year 2 |  | 201
Gross charge-offs, Year 3 | 163 | 778
Gross charge-offs, Year 4 | 38 | 661
Gross charge-offs, Year 5 | 181 |
Total | 382 | 1,850
Pass | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 25,400 | 81,246
Year 2 | 77,843 | 69,710
Year 3 | 68,176 | 57,789
Year 4 | 41,562 | 53,915
Year 5 | 51,048 | 38,907
Prior | 130,260 | 94,729
Revolving Loans Amortized Cost Basis | 262,840 | 251,834
Revolving Loans Converted to Term | 97 | 100
Total | 657,226 | 648,230
Pass | Municipal |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 10,835 | 23,125
Year 2 | 19,850 | 4,324
Year 3 | 4,305 | 1,354
Year 4 | 1,275 | 45,369
Year 5 | 45,089 | 88,165
Prior | 129,271 | 38,331
Revolving Loans Amortized Cost Basis | 1,961 | 1,635
Total | 212,586 | 202,303
Pass | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 142,110 | 359,323
Year 2 | 382,338 | 146,483
Year 3 | 145,846 | 175,145
Year 4 | 168,925 | 566,480
Year 5 | 554,023 | 441,660
Prior | 988,644 | 586,189
Revolving Loans Converted to Term | 488 | 71
Total | 2,382,374 | 2,275,351
Pass | Residential real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 13,330 | 56,021
Year 2 | 55,364 | 38,109
Year 3 | 37,775 | 40,913
Year 4 | 39,653 | 66,927
Year 5 | 65,554 | 104,534
Prior | 246,611 | 148,121
Revolving Loans Amortized Cost Basis | 158,533 | 146,380
Total | 616,820 | 601,005
Pass | Consumer |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 4,031 | 25,443
Year 2 | 23,391 | 19,746
Year 3 | 17,681 | 24,017
Year 4 | 21,093 | 21,716
Year 5 | 18,524 | 9,574
Prior | 9,705 | 3,153
Revolving Loans Amortized Cost Basis | 6,353 | 6,493
Total | 100,778 | 110,142
Pass | Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 8,309 | 50,357
Year 2 | 48,545 | 51,024
Year 3 | 46,086 | 43,364
Year 4 | 37,338 | 21,050
Year 5 | 16,393 | 724
Prior | 492 |
Total | 157,163 | 166,519
Special mention | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 |  | 300
Year 2 |  | 572
Year 4 |  | 2,725
Year 5 | 323 | 36
Prior | 28 | 9
Revolving Loans Amortized Cost Basis | 2,134 | 8,718
Total | 2,485 | 12,360
Special mention | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 |  | 573
Year 2 | 567 |
Year 4 | 111 | 1,508
Year 5 | 1,255 | 2,174
Prior | 11,047 | 9,149
Total | 12,980 | 13,404
Special mention | Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 3 |  | 129
Year 4 | 118 | 12
Year 5 | 36 |
Total | 154 | 141
Substandard | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 30 |
Year 2 |  | 111
Year 3 | 662 | 400
Year 4 | 387 | 579
Year 5 | 2,240 | 664
Prior | 779 | 30
Revolving Loans Amortized Cost Basis | 11,637 | 5,574
Total | 15,735 | 7,358
Substandard | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 | 79 | 542
Year 2 | 1,144 | 508
Year 3 | 1,159 | 1,217
Year 4 | 1,262 | 7,841
Year 5 | 8,081 | 6,870
Prior | 15,948 | 8,377
Total | 27,673 | 25,355
Substandard | Residential real estate |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 5 |  | 258
Prior | 1,141 | 869
Revolving Loans Amortized Cost Basis | 195 | 177
Total | 1,336 | 1,304
Substandard | Consumer |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 |  | 158
Year 2 | 16 | 161
Year 3 | 52 | 137
Year 4 | 171 | 338
Year 5 | 239 | 177
Prior | 61 | 113
Revolving Loans Amortized Cost Basis | 1 | 12
Total | 540 | 1,096
Substandard | Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable |  |
Year 1 |  | 287
Year 2 | 420 | 664
Year 3 | 725 | 691
Year 4 | 811 | 686
Year 5 | 396 |
Total | $ 2,352 | $ 2,328

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