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Loans, Allowance for Credit Losses and Credit Quality (Tables) | 6 Months Ended
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Jun. 30, 2025
Receivables [Abstract] |
Financing Receivable, Allowance for Credit Loss [Table Text Block] | The following table summarizes the change in allowance for credit losses by loan category, and bifurcates the amount of loans allocated to each loan category for the period indicated:
| Three Months Ended June 30, 2025
| (Dollars in thousands)
| Commercial and Industrial |  | Commercial Real Estate |  | Commercial Construction |  | Small Business |  | Residential Real Estate |  | Home Equity |  | Other Consumer |  | Total
Allowance for credit losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 34,200 |  |  | $ | 60,117 |  |  | $ | 8,377 |  |  | $ | 4,318 |  |  | $ | 25,469 |  |  | $ | 10,846 |  |  | $ | 765 |  |  | $ | 144,092 |
Charge-offs | (2,755) |  |  | (3,348) |  |  | — |  |  | (90) |  |  | — |  |  | — |  |  | (773) |  |  | (6,966) |
Recoveries | 13 |  |  | 1 |  |  | — |  |  | 39 |  |  | — |  |  | 49 |  |  | 345 |  |  | 447 |
Provision for (release of) credit losses | 3,851 |  |  | 2,734 |  |  | (194) |  |  | 298 |  |  | (55) |  |  | 16 |  |  | 550 |  |  | 7,200 |
Ending balance (1) | $ | 35,309 |  |  | $ | 59,504 |  |  | $ | 8,183 |  |  | $ | 4,565 |  |  | $ | 25,414 |  |  | $ | 10,911 |  |  | $ | 887 |  |  | $ | 144,773 |
| Three Months Ended June 30, 2024
| (Dollars in thousands)
| Commercial and Industrial |  | Commercial Real Estate |  | Commercial Construction |  | Small Business |  | Residential Real Estate |  | Home Equity |  | Other Consumer |  | Total
Allowance for credit losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 35,175 |  |  | $ | 63,243 |  |  | $ | 7,573 |  |  | $ | 4,028 |  |  | $ | 24,180 |  |  | $ | 12,042 |  |  | $ | 707 |  |  | $ | 146,948 |
Charge-offs | — |  |  | — |  |  | — |  |  | (60) |  |  | — |  |  | (11) |  |  | (737) |  |  | (808) |
Recoveries | 2 |  |  | — |  |  | — |  |  | 12 |  |  | — |  |  | 148 |  |  | 307 |  |  | 469 |
Provision for (release of) credit losses | 443 |  |  | 2,522 |  |  | 231 |  |  | 79 |  |  | 656 |  |  | (424) |  |  | 743 |  |  | 4,250 |
Ending balance (1) | $ | 35,620 |  |  | $ | 65,765 |  |  | $ | 7,804 |  |  | $ | 4,059 |  |  | $ | 24,836 |  |  | $ | 11,755 |  |  | $ | 1,020 |  |  | $ | 150,859 |
| Six Months Ended June 30, 2025
| (Dollars in thousands)
| Commercial and Industrial |  | Commercial Real Estate |  | Commercial Construction |  | Small Business |  | Residential Real Estate |  | Home Equity |  | Other Consumer |  | Total
Allowance for credit losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 27,800 |  |  | $ | 92,535 |  |  | $ | 8,166 |  |  | $ | 4,182 |  |  | $ | 25,238 |  |  | $ | 11,007 |  |  | $ | 1,056 |  |  | $ | 169,984 |
Charge-offs | (2,810) |  |  | (43,344) |  |  | — |  |  | (202) |  |  | — |  |  | (96) |  |  | (1,914) |  |  | (48,366) |
Recoveries | 15 |  |  | 1 |  |  | — |  |  | 52 |  |  | — |  |  | 67 |  |  | 820 |  |  | 955 |
Provision for (release of) credit losses | 10,304 |  |  | 10,312 |  |  | 17 |  |  | 533 |  |  | 176 |  |  | (67) |  |  | 925 |  |  | 22,200 |
Ending balance (1) | $ | 35,309 |  |  | $ | 59,504 |  |  | $ | 8,183 |  |  | $ | 4,565 |  |  | $ | 25,414 |  |  | $ | 10,911 |  |  | $ | 887 |  |  | $ | 144,773 |
| Six Months Ended June 30, 2024
| (Dollars in thousands)
| Commercial and Industrial |  | Commercial Real Estate |  | Commercial Construction |  | Small Business |  | Residential Real Estate |  | Home Equity |  | Other Consumer |  | Total
Allowance for credit losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 33,317 |  |  | $ | 60,074 |  |  | $ | 7,683 |  |  | $ | 3,963 |  |  | $ | 23,637 |  |  | $ | 12,797 |  |  | $ | 751 |  |  | $ | 142,222 |
Charge-offs | — |  |  | — |  |  | — |  |  | (169) |  |  | — |  |  | (11) |  |  | (1,509) |  |  | (1,689) |
Recoveries | 87 |  |  | — |  |  | — |  |  | 51 |  |  | — |  |  | 281 |  |  | 657 |  |  | 1,076 |
Provision for (release of) credit losses | 2,216 |  |  | 5,691 |  |  | 121 |  |  | 214 |  |  | 1,199 |  |  | (1,312) |  |  | 1,121 |  |  | 9,250 |
Ending balance (1) | $ | 35,620 |  |  | $ | 65,765 |  |  | $ | 7,804 |  |  | $ | 4,059 |  |  | $ | 24,836 |  |  | $ | 11,755 |  |  | $ | 1,020 |  |  | $ | 150,859 |
(1)Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $54.5 million and $59.2 million as of June 30, 2025 and June 30, 2024, respectively.
Financing Receivable Credit Quality Indicators [Table Text Block] | The following table details the amortized cost balances of the Company's loan portfolios, presented by credit quality indicator and origination year as of the dates indicated below:
| June 30, 2025
| 2025 |  | 2024 |  | 2023 |  | 2022 |  | 2021 |  | Prior |  | Revolving Loans |  | Revolving converted to Term |  | Total (1)
| (Dollars in thousands)
Commercial and industrial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 469,808 |  |  | $ | 576,092 |  |  | $ | 274,823 |  |  | $ | 298,891 |  |  | $ | 214,110 |  |  | $ | 616,273 |  |  | $ | 609,560 |  |  | $ | — |  |  | $ | 3,059,557 |
Special mention | 12,217 |  |  | 17,413 |  |  | 7,865 |  |  | 1,753 |  |  | 2,398 |  |  | 2,437 |  |  | 41,441 |  |  | — |  |  | 85,524 |
Substandard | 27,725 |  |  | 4,266 |  |  | 4,149 |  |  | 3,346 |  |  | 181 |  |  | 1,660 |  |  | 25,060 |  |  | — |  |  | 66,387 |
Doubtful | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,012 |  |  | — |  |  | 4,012 |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total commercial and industrial | $ | 509,750 |  |  | $ | 597,771 |  |  | $ | 286,837 |  |  | $ | 303,990 |  |  | $ | 216,689 |  |  | $ | 620,370 |  |  | $ | 680,073 |  |  | $ | — |  |  | $ | 3,215,480 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 86 |  |  | $ | — |  |  | $ | 21 |  |  | $ | 2,703 |  |  | $ | — |  |  | $ | 2,810 |
Commercial real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 463,592 |  |  | $ | 722,277 |  |  | $ | 823,443 |  |  | $ | 841,841 |  |  | $ | 956,044 |  |  | $ | 2,385,395 |  |  | $ | 99,537 |  |  | $ | — |  |  | $ | 6,292,129 |
Special mention | 40,685 |  |  | 14,581 |  |  | 3,919 |  |  | — |  |  | 2,743 |  |  | 77,228 |  |  | 197 |  |  | — |  |  | 139,353 |
Substandard | 13,009 |  |  | 27,256 |  |  | — |  |  | 12,776 |  |  | 10,051 |  |  | 3,965 |  |  | — |  |  | — |  |  | 67,057 |
Doubtful | 22,259 |  |  | — |  |  | — |  |  | — |  |  | 4,640 |  |  | — |  |  | — |  |  | — |  |  | 26,899 |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total commercial real estate | $ | 539,545 |  |  | $ | 764,114 |  |  | $ | 827,362 |  |  | $ | 854,617 |  |  | $ | 973,478 |  |  | $ | 2,466,588 |  |  | $ | 99,734 |  |  | $ | — |  |  | $ | 6,525,438 |
Current-period gross write-offs | $ | 8,126 |  |  | $ | — |  |  | $ | 26,863 |  |  | $ | — |  |  | $ | 7,020 |  |  | $ | 1,335 |  |  | $ | — |  |  | $ | — |  |  | $ | 43,344 |
Commercial construction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 78,681 |  |  | $ | 292,740 |  |  | $ | 166,121 |  |  | $ | 81,066 |  |  | $ | 62,200 |  |  | $ | 24,182 |  |  | $ | 26,240 |  |  | $ | — |  |  | $ | 731,230 |
Special mention | — |  |  | 8,977 |  |  | — |  |  | 16,310 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 25,287 |
Substandard | — |  |  | 33,374 |  |  | — |  |  | 8,917 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 42,291 |
Doubtful | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total commercial construction | $ | 78,681 |  |  | $ | 335,091 |  |  | $ | 166,121 |  |  | $ | 106,293 |  |  | $ | 62,200 |  |  | $ | 24,182 |  |  | $ | 26,240 |  |  | $ | — |  |  | $ | 798,808 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Small business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 33,794 |  |  | $ | 52,247 |  |  | $ | 39,405 |  |  | $ | 40,819 |  |  | $ | 30,177 |  |  | $ | 44,388 |  |  | $ | 56,315 |  |  | $ | — |  |  | $ | 297,145 |
Special mention | — |  |  | 21 |  |  | 125 |  |  | 70 |  |  | 113 |  |  | 235 |  |  | 981 |  |  | — |  |  | 1,545 |
Substandard | 238 |  |  | 172 |  |  | 12 |  |  | 778 |  |  | — |  |  | 369 |  |  | 284 |  |  | — |  |  | 1,853 |
Doubtful | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total small business | $ | 34,032 |  |  | $ | 52,440 |  |  | $ | 39,542 |  |  | $ | 41,667 |  |  | $ | 30,290 |  |  | $ | 44,992 |  |  | $ | 57,580 |  |  | $ | — |  |  | $ | 300,543 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | 14 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 188 |  |  | $ | — |  |  | $ | 202 |
Residential real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 129,481 |  |  | $ | 192,648 |  |  | $ | 455,512 |  |  | $ | 583,460 |  |  | $ | 368,856 |  |  | $ | 755,676 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,485,633 |
Default | — |  |  | — |  |  | 378 |  |  | 589 |  |  | 735 |  |  | 1,831 |  |  | — |  |  | — |  |  | 3,533 |
Total residential real estate | $ | 129,481 |  |  | $ | 192,648 |  |  | $ | 455,890 |  |  | $ | 584,049 |  |  | $ | 369,591 |  |  | $ | 757,507 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,489,166 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Home equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 3,781 |  |  | $ | 14,278 |  |  | $ | 20,670 |  |  | $ | 31,208 |  |  | $ | 47,027 |  |  | $ | 159,164 |  |  | $ | 878,696 |  |  | $ | 11,199 |  |  | $ | 1,166,023 |
Default | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 327 |  |  | 1,747 |  |  | — |  |  | 2,074 |
Total home equity | $ | 3,781 |  |  | $ | 14,278 |  |  | $ | 20,670 |  |  | $ | 31,208 |  |  | $ | 47,027 |  |  | $ | 159,491 |  |  | $ | 880,443 |  |  | $ | 11,199 |  |  | $ | 1,168,097 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 96 |  |  | $ | — |  |  | $ | 96 |
Other consumer (2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 761 |  |  | $ | 415 |  |  | $ | 221 |  |  | $ | 69 |  |  | $ | 343 |  |  | $ | 937 |  |  | $ | 33,549 |  |  | $ | — |  |  | $ | 36,295 |
Default | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
Total other consumer | $ | 761 |  |  | $ | 415 |  |  | $ | 221 |  |  | $ | 69 |  |  | $ | 343 |  |  | $ | 937 |  |  | $ | 33,550 |  |  | $ | — |  |  | $ | 36,296 |
Current-period gross write-offs | $ | 1,907 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 7 |  |  | $ | — |  |  | $ | 1,914 |
Total | $ | 1,296,031 |  |  | $ | 1,956,757 |  |  | $ | 1,796,643 |  |  | $ | 1,921,893 |  |  | $ | 1,699,618 |  |  | $ | 4,074,067 |  |  | $ | 1,777,620 |  |  | $ | 11,199 |  |  | $ | 14,533,828 |
Total current-period gross write-offs | $ | 10,033 |  |  | $ | — |  |  | $ | 26,877 |  |  | $ | 86 |  |  | $ | 7,020 |  |  | $ | 1,356 |  |  | $ | 2,994 |  |  | $ | — |  |  | $ | 48,366 |
| December 31, 2024
| 2024 |  | 2023 |  | 2022 |  | 2021 |  | 2020 |  | Prior |  | Revolving Loans |  | Revolving converted to Term |  | Total (1)
| (Dollars in thousands)
Commercial and industrial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 690,411 |  |  | $ | 302,384 |  |  | $ | 351,296 |  |  | $ | 243,361 |  |  | $ | 166,779 |  |  | $ | 504,804 |  |  | $ | 623,730 |  |  | $ | 1,117 |  |  | $ | 2,883,882 |
Special mention | 18,600 |  |  | 554 |  |  | 2,394 |  |  | 10,610 |  |  | 871 |  |  | 2,458 |  |  | 40,927 |  |  | — |  |  | 76,414 |
Substandard | 16,933 |  |  | 4,195 |  |  | 5,276 |  |  | 27,641 |  |  | 139 |  |  | 22 |  |  | 21,517 |  |  | — |  |  | 75,723 |
Doubtful | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 11,652 |  |  | — |  |  | 11,652 |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total commercial and industrial | $ | 725,944 |  |  | $ | 307,133 |  |  | $ | 358,966 |  |  | $ | 281,612 |  |  | $ | 167,789 |  |  | $ | 507,284 |  |  | $ | 697,826 |  |  | $ | 1,117 |  |  | $ | 3,047,671 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 5,897 |  |  | $ | — |  |  | $ | 5,897 |
Commercial real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 774,331 |  |  | $ | 866,492 |  |  | $ | 907,629 |  |  | $ | 1,036,174 |  |  | $ | 997,858 |  |  | $ | 1,823,148 |  |  | $ | 98,473 |  |  | $ | 241 |  |  | $ | 6,504,346 |
Special mention | 16,243 |  |  | 5,935 |  |  | — |  |  | 760 |  |  | — |  |  | 60,184 |  |  | 198 |  |  | — |  |  | 83,320 |
Substandard | 53,532 |  |  | 13,017 |  |  | 12,967 |  |  | 10,145 |  |  | 916 |  |  | 5,836 |  |  | — |  |  | — |  |  | 96,413 |
Doubtful | — |  |  | 53,752 |  |  | — |  |  | 11,660 |  |  | — |  |  | 7,217 |  |  | — |  |  | — |  |  | 72,629 |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total commercial real estate | $ | 844,106 |  |  | $ | 939,196 |  |  | $ | 920,596 |  |  | $ | 1,058,739 |  |  | $ | 998,774 |  |  | $ | 1,896,385 |  |  | $ | 98,671 |  |  | $ | 241 |  |  | $ | 6,756,708 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial construction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 288,979 |  |  | $ | 173,856 |  |  | $ | 130,245 |  |  | $ | 62,972 |  |  | $ | — |  |  | $ | 24,583 |  |  | $ | 32,077 |  |  | $ | 1,756 |  |  | $ | 714,468 |
Special mention | — |  |  | 2,316 |  |  | 15,622 |  |  | 9,078 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 27,016 |
Substandard | 31,549 |  |  | — |  |  | 9,045 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 40,594 |
Doubtful | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total commercial construction | $ | 320,528 |  |  | $ | 176,172 |  |  | $ | 154,912 |  |  | $ | 72,050 |  |  | $ | — |  |  | $ | 24,583 |  |  | $ | 32,077 |  |  | $ | 1,756 |  |  | $ | 782,078 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Small business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 56,869 |  |  | $ | 44,676 |  |  | $ | 43,925 |  |  | $ | 32,858 |  |  | $ | 21,527 |  |  | $ | 26,457 |  |  | $ | 52,919 |  |  | $ | 1 |  |  | $ | 279,232 |
Special mention | — |  |  | 102 |  |  | 16 |  |  | 114 |  |  | 93 |  |  | 218 |  |  | 607 |  |  | — |  |  | 1,150 |
Substandard | 199 |  |  | 259 |  |  | 63 |  |  | 1 |  |  | 180 |  |  | 329 |  |  | 368 |  |  | — |  |  | 1,399 |
Doubtful | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total small business | $ | 57,068 |  |  | $ | 45,037 |  |  | $ | 44,004 |  |  | $ | 32,973 |  |  | $ | 21,800 |  |  | $ | 27,004 |  |  | $ | 53,894 |  |  | $ | 1 |  |  | $ | 281,781 |
Current-period gross write-offs | $ | 48 |  |  | $ | 39 |  |  | $ | 35 |  |  | $ | 54 |  |  | $ | — |  |  | $ | — |  |  | $ | 520 |  |  | $ | — |  |  | $ | 696 |
Residential real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 197,985 |  |  | $ | 472,546 |  |  | $ | 607,105 |  |  | $ | 381,182 |  |  | $ | 173,047 |  |  | $ | 625,111 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,456,976 |
Default | — |  |  | 209 |  |  | 636 |  |  | 373 |  |  | 742 |  |  | 1,664 |  |  | — |  |  | — |  |  | 3,624 |
Total residential real estate | $ | 197,985 |  |  | $ | 472,755 |  |  | $ | 607,741 |  |  | $ | 381,555 |  |  | $ | 173,789 |  |  | $ | 626,775 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,460,600 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Home equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 14,888 |  |  | $ | 24,020 |  |  | $ | 32,577 |  |  | $ | 49,290 |  |  | $ | 45,322 |  |  | $ | 127,029 |  |  | $ | 829,688 |  |  | $ | 16,229 |  |  | $ | 1,139,043 |
Default | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 226 |  |  | 803 |  |  | 96 |  |  | 1,125 |
Total home equity | $ | 14,888 |  |  | $ | 24,020 |  |  | $ | 32,577 |  |  | $ | 49,290 |  |  | $ | 45,322 |  |  | $ | 127,255 |  |  | $ | 830,491 |  |  | $ | 16,325 |  |  | $ | 1,140,168 |
Current-period gross write-offs | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 241 |  |  | $ | 139 |  |  | $ | 380 |
Other consumer (2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass | $ | 651 |  |  | $ | 445 |  |  | $ | 151 |  |  | $ | 599 |  |  | $ | 211 |  |  | $ | 1,158 |  |  | $ | 36,157 |  |  | $ | — |  |  | $ | 39,372 |
Default | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total other consumer | $ | 651 |  |  | $ | 445 |  |  | $ | 151 |  |  | $ | 599 |  |  | $ | 211 |  |  | $ | 1,158 |  |  | $ | 36,157 |  |  | $ | — |  |  | $ | 39,372 |
Current-period gross write-offs | $ | 3,339 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 19 |  |  | $ | 16 |  |  | $ | — |  |  | $ | 3,374 |
Total | $ | 2,161,170 |  |  | $ | 1,964,758 |  |  | $ | 2,118,947 |  |  | $ | 1,876,818 |  |  | $ | 1,407,685 |  |  | $ | 3,210,444 |  |  | $ | 1,749,116 |  |  | $ | 19,440 |  |  | $ | 14,508,378 |
Total current -period gross write-offs | $ | 3,387 |  |  | $ | 39 |  |  | $ | 35 |  |  | $ | 54 |  |  | $ | — |  |  | $ | 19 |  |  | $ | 6,674 |  |  | $ | 139 |  |  | $ | 10,347 |
(1)Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan. (2)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances and the associated gross write-offs.
Foreclosed Residential Real Estate Property [Table Text Block] | The following table shows information regarding foreclosed residential real estate property at the dates indicated:
| June 30, 2025 |  | December 31, 2024
| (Dollars in thousands)
Foreclosed residential real estate property held by the creditor | $ | — |  |  | $ | — |
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure | $ | 1,974 |  |  | $ | 1,301 |
Financing Receivable Credit Quality Indicators For Consumer And Residential Portfolio Table Text Block | The following table shows the weighted average FICO scores and the weighted average combined LTV ratios at the dates indicated below:
| June 30 2025 |  | December 31 2024
Residential real estate portfolio |  |  |
FICO score (re-scored)(1) | 756 |  |  | 755 |
LTV (re-valued)(2) | 56.9 | % |  | 57.9 | %
Home equity portfolio |  |  |
FICO score (re-scored)(1) | 770 |  |  | 769 |
LTV (re-valued)(2)(3) | 43.5 | % |  | 43.9 | %
(1)The average FICO scores at June 30, 2025 are based upon rescores from March 2025, as available for previously originated loans, or the origination score data for loans booked since March 2025. The average FICO scores at December 31, 2024 were based upon rescores from December 2024, as available for previously originated loans, or origination score data for loans booked in December 2024. (2)The combined LTV ratios for June 30, 2025 are based upon updated automated valuations as of May 2025, when available, and/or the most current valuation data available. The combined LTV ratios for December 31, 2024 were based upon updated automated valuations as of November 2024, when available, and/or the most current valuation data available. The updated automated valuations provide new information on loans that may be available since the previous valuation was obtained. If no new information is available, the valuation will default to the previously obtained data or most recent appraisal. (3)For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines.
Financing Receivable, Past Due [Table Text Block] | The following tables show the age analysis of past due financing receivables as of the dates indicated:
| June 30, 2025
| 30-59 days |  | 60-89 days |  | 90 days or more |  | Total Past Due |  |  |  | Total Financing Receivables (2) |  |
| Number of Loans |  | Principal Balance |  | Number of Loans |  | Principal Balance |  | Number of Loans |  | Principal Balance |  | Number of Loans |  | Principal Balance |  | Current |
| (Dollars in thousands)
Loan Portfolio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | 3 |  |  | $ | 183 |  |  | 3 |  |  | $ | 1,184 |  |  | 8 |  |  | $ | 4,673 |  |  | 14 |  |  | $ | 6,040 |  |  | $ | 3,209,440 |  |  | $ | 3,215,480 |  |  |
Commercial real estate | 6 |  |  | 4,399 |  |  | 2 |  |  | 826 |  |  | 3 |  |  | 6,206 |  |  | 11 |  |  | 11,431 |  |  | 6,514,007 |  |  | 6,525,438 |  |  |
Commercial construction | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 798,808 |  |  | 798,808 |  |  |
Small business | 8 |  |  | 74 |  |  | 14 |  |  | 272 |  |  | 4 |  |  | 58 |  |  | 26 |  |  | 404 |  |  | 300,139 |  |  | 300,543 |  |  |
Residential real estate | 18 |  |  | 3,607 |  |  | 6 |  |  | 1,398 |  |  | 12 |  |  | 2,134 |  |  | 36 |  |  | 7,139 |  |  | 2,482,027 |  |  | 2,489,166 |  |  |
Home equity | 7 |  |  | 874 |  |  | 5 |  |  | 326 |  |  | 19 |  |  | 2,074 |  |  | 31 |  |  | 3,274 |  |  | 1,164,823 |  |  | 1,168,097 |  |  |
Other consumer (1) | 420 |  |  | 231 |  |  | 6 |  |  | 16 |  |  | 3 |  |  | 1 |  |  | 429 |  |  | 248 |  |  | 36,048 |  |  | 36,296 |  |  |
Total | 462 |  |  | $ | 9,368 |  |  | 36 |  |  | $ | 4,022 |  |  | 49 |  |  | $ | 15,146 |  |  | 547 |  |  | $ | 28,536 |  |  | $ | 14,505,292 |  |  | $ | 14,533,828 |  |  |
| December 31, 2024
| 30-59 days |  | 60-89 days |  | 90 days or more |  | Total Past Due |  |  |  | Total Financing Receivables (2) |  |
| Number of Loans |  | Principal Balance |  | Number of Loans |  | Principal Balance |  | Number of Loans |  | Principal Balance |  | Number of Loans |  | Principal Balance |  | Current |
| (Dollars in thousands)
Loan Portfolio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | 7 |  |  | $ | 5,807 |  |  | 1 |  |  | $ | 5 |  |  | 5 |  |  | $ | 13,843 |  |  | 13 |  |  | $ | 19,655 |  |  | $ | 3,028,016 |  |  | $ | 3,047,671 |  |  |
Commercial real estate | 3 |  |  | 33,087 |  |  | — |  |  | — |  |  | 3 |  |  | 20,458 |  |  | 6 |  |  | 53,545 |  |  | 6,703,163 |  |  | 6,756,708 |  |  |
Commercial construction | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 782,078 |  |  | 782,078 |  |  |
Small business | 6 |  |  | 830 |  |  | 4 |  |  | 24 |  |  | 3 |  |  | 29 |  |  | 13 |  |  | 883 |  |  | 280,898 |  |  | 281,781 |  |  |
Residential real estate | 27 |  |  | 6,310 |  |  | 9 |  |  | 1,401 |  |  | 10 |  |  | 2,224 |  |  | 46 |  |  | 9,935 |  |  | 2,450,665 |  |  | 2,460,600 |  |  |
Home equity | 9 |  |  | 1,046 |  |  | 11 |  |  | 764 |  |  | 10 |  |  | 1,126 |  |  | 30 |  |  | 2,936 |  |  | 1,137,232 |  |  | 1,140,168 |  |  |
Other consumer (1) | 596 |  |  | 441 |  |  | 3 |  |  | 7 |  |  | 6 |  |  | 6 |  |  | 605 |  |  | 454 |  |  | 38,918 |  |  | 39,372 |  |  |
Total | 648 |  |  | $ | 47,521 |  |  | 28 |  |  | $ | 2,201 |  |  | 37 |  |  | $ | 37,686 |  |  | 713 |  |  | $ | 87,408 |  |  | $ | 14,420,970 |  |  | $ | 14,508,378 |  |  |
(1)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances. (2)The amount of net deferred fees/costs on originated loans included in the ending balance was $6.8 million and $6.1 million at June 30, 2025 and December 31, 2024, respectively. Net unamortized discounts on acquired loans included in the ending balance were $7.5 million and $8.1 million at June 30, 2025 and December 31, 2024, respectively.
Financing Receivable, Nonaccrual [Table Text Block] | The following table shows information regarding nonaccrual loans as of the dates indicated:
| Nonaccrual Balances
| June 30, 2025 |  | December 31, 2024
| With Allowance for Credit Losses |  | Without Allowance for Credit Losses (1) |  | Total |  | With Allowance for Credit Losses |  | Without Allowance for Credit Losses (1) |  | Total
| (Dollars in thousands)
Commercial and industrial | $ | 13,544 |  |  | $ | — |  |  | $ | 13,544 |  |  | $ | 2,500 |  |  | $ | 11,652 |  |  | $ | 14,152 |
Commercial real estate | 4,892 |  |  | 23,825 |  |  | 28,717 |  |  | 67,126 |  |  | 7,217 |  |  | 74,343 |
Small business | 173 |  |  | — |  |  | 173 |  |  | 302 |  |  | — |  |  | 302 |
Residential real estate | 10,013 |  |  | — |  |  | 10,013 |  |  | 10,243 |  |  | — |  |  | 10,243 |
Home equity | 3,765 |  |  | — |  |  | 3,765 |  |  | 2,479 |  |  | — |  |  | 2,479 |
Other consumer | 5 |  |  | — |  |  | 5 |  |  | 10 |  |  | — |  |  | 10 |
Total nonaccrual loans | $ | 32,392 |  |  | $ | 23,825 |  |  | $ | 56,217 |  |  | $ | 82,660 |  |  | $ | 18,869 |  |  | $ | 101,529 |
(1)Nonaccrual balances reported above without an allowance for credit losses are attributable to loans evaluated on an individual basis where it was determined that there was no risk of loss due to sufficient underlying collateral values.
Financing Receivable, Modified, Past Due |
Financing Receivable, Troubled Debt Restructuring [Table Text Block] | The following tables present the period end amortized cost basis of loans modified to borrowers experiencing financial difficulty during the periods indicated, disaggregated by class of financing receivable, type of modification granted and the financial effect of the modifications:
| Three Months Ended June 30, 2025
| Amortized Cost Basis |  | % of Total Class of Financing Receivable |  | Financial Effect
(Dollars in thousands) |  |  |
Term Extension |  |  |  |  |
Commercial and industrial | $ | 3,879 |  |  | 0.12 | % |  | Extended contractual term on one loan by 1 year
Commercial real estate | 1,653 |  |  | 0.03 | % |  | Extended contractual term on one loan by 3 months
Small business | 239 |  |  | 0.08 | % |  | Extended contractual term on one loan by 5.2 years
Home equity | 245 |  |  | 0.02 | % |  | Added a weighted-average contractual term of 5.2 years to the life of the loans
Total | $ | 6,016 |  |  |  |  |
Other Than Insignificant Payment Delay |  |
Commercial and industrial | $ | 1,036 |  |  | 0.03 | % |  | Modification was made with minimal financial effect
Total | $ | 1,036 |  |  |  |  |
Term Extension and Interest Rate Reduction
Commercial and industrial | $ | 93 |  |  | —% |  | Extended the contractual term on one loan by 5.0 years and reduced the interest rate from 9.50% to 6.69%
Commercial real estate | 13,015 |  |  | 0.20% |  | Extended the contractual term on one loan by 3.0 years and reduced the interest rate from 7.70% to 6.25%
Home equity | 229 |  |  | 0.02% |  | Extended the contractual term on one loan by 17.5 years and reduced the interest rate from 7.24% to 6.88%
Total | $ | 13,337 |  |  |  |  |
Term Extension and Other Than Insignificant Payment Delay
Commercial real estate | $ | 22,248 |  |  | 0.34% |  | Modification on one loan included an interest rate reduction from 5.91% to 5.50% and payment deferral of 13 months
Total | $ | 22,248 |  |  |  |  |
Total Outstanding Modified | $ | 42,637 |  |  |  |  |
| Six Months Ended June 30, 2025
| Amortized Cost Basis |  | % of Total Class of Financing Receivable |  | Financial Effect
(Dollars in thousands) |  |  |
Term Extension |  |  |  |  |
Commercial and industrial | $ | 8,986 |  |  | 0.28% |  | Added a weighted-average contractual term of 11 months to the life of the loans
Commercial real estate | 5,028 |  |  | 0.08% |  | Added a weighted-average contractual term of 5 months to the life of the loans
Small business | 239 |  |  | 0.08% |  | Extended contractual term on one loan by 5.2 years
Residential real estate | 272 |  |  | 0.01% |  | Extended contractual term on one loan by 17.8 years
Home equity | 245 |  |  | 0.02% |  | Added a weighted-average contractual term of 5.2 years to the life of the loans
Total | $ | 14,770 |  |  |  |  |
Other Than Insignificant Payment Delay
Commercial and industrial | $ | 1,036 |  |  | 0.03% |  | Modification was made with minimal financial effect
Commercial real estate | 11,002 |  |  | 0.17% |  | Modification was made with minimal financial effect
Total | $ | 12,038 |  |  |  |  |
Term Extension and Interest Rate Reduction
Commercial and industrial | $ | 93 |  |  | —% |  | Extended the contractual term on one loan by 5.0 years and reduced the interest rate from 9.50% to 6.69%
Commercial real estate | 25,093 |  |  | 0.38% |  | Added a weighted-average contractual term of 3.7 years to the life of the loans and reduced the weighted-average interest rate from 7.85% to 6.83%
Home equity | 1,185 |  |  | 0.10% |  | Added a weighted-average contractual term of 23.6 years to the life of the loans and reduced the weighted-average interest rate from 7.25% to 6.88%
Total | $ | 26,371 |  |  |  |  |
Term Extension and Other Than Insignificant Payment Delay
Commercial real estate | $ | 22,248 |  |  | 0.34% |  | Modification on one loan included an interest rate reduction from 5.91% to 5.50% and payment deferral of 13 months
Total | $ | 22,248 |  |  |  |  |
Total Outstanding Modified | $ | 75,427 |  |  |  |  |
| Three Months Ended June 30, 2024
| Amortized Cost Basis |  | % of Total Class of Financing Receivable |  | Financial Effect
(Dollars in thousands) |  |  |
Term Extension
Commercial and industrial | $ | 12,667 |  |  | 0.42 | % |  | Added a weighted-average contractual term of 2.3 years to the life of the loans
Commercial real estate | 28,239 |  |  | 0.42 | % |  | Added a weighted-average contractual term of 5 months to the life of the loans
Commercial construction | 4,452 |  |  | 0.57 | % |  | Extended contractual term on one loan by 12 months
Residential real estate | 298 |  |  | 0.01 | % |  | Extended contractual term on one loan by 6.2 years
Total | $ | 45,656 |  |  |  |  |
Interest Rate Reduction |  |  |  |  |
Home equity | $ | 65 |  |  | 0.01 | % |  | Reduced contractual rate on one loan from 7.99% to 7.00%
Total | $ | 65 |  |  |  |  |
Term Extension and Interest Rate Reduction
Small business | $ | 36 |  |  | 0.01 | % |  | Extended the contractual term on one loan by 2.5 years and reduced the loan’s contractual interest rate from 10.25% to 6.50%
Total | $ | 36 |  |  |  |  |
Total Outstanding Modified | $ | 45,757 |  |  |  |  |
| Six Months Ended June 30, 2024
| Amortized Cost Basis |  | % of Total Class of Financing Receivable |  | Financial Effect
(Dollars in thousands) |  |  |
Term Extension
Commercial and industrial | $ | 12,670 |  |  | 0.42 | % |  | Added a weighted-average contractual term of 2.3 years to the life of the loans
Commercial real estate | 31,614 |  |  | 0.47 | % |  | Added a weighted-average contractual term of 5 months to the life of the loans
Commercial construction | 6,542 |  |  | 0.83 | % |  | Added a weighted-average contractual term of 10 months to the life of the loans
Residential real estate | 298 |  |  | 0.01 | % |  | Extended the contractual term on one loan by 6.2 years
Total | $ | 51,124 |  |  |  |  |
Interest Rate Reduction |  |  |  |  |
Small business | $ | 47 |  |  | 0.02 | % |  | Reduced contractual rate on one loan from 11.00% to 8.20%
Home equity | 65 |  |  | 0.01 | % |  | Reduced contractual rate on one loan from 7.99% to 7.00%
Total | $ | 112 |  |  |  |  |
Other Than Insignificant Payment Delay
Commercial and industrial | $ | 8,159 |  |  | 0.27 | % |  | Modification was made with minimal financial effect
Total | $ | 8,159 |  |  |  |  |
Term Extension and Interest Rate Reduction
Commercial and industrial | $ | 152 |  |  | 0.01 | % |  | Extended the contractual term on one loan by 1.5 years and reduced the interest rate from 10.10% to 7.20%
Small business | 36 |  |  | 0.01 | % |  | Extended the contractual term on one loan by 2.5 years and reduced the interest rate on one loan from 10.25% to 6.50%
Home equity | 70 |  |  | 0.01 | % |  | Extended the contractual term on one loan by 8.1 years and reduced the interest rate from 10.00% to 6.80%
Total | $ | 258 |  |  |  |  |
Total Outstanding Modified | $ | 59,653 |  |  |  |  |

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