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Loans and Allowance for Credit Losses - Schedule of Risk Rating and Payment Performance (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Risk Category Of Loans [Line Items] |  |  |
Total loans | $ 48,764,162 | $ 36,285,887 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 1,705 | 3,667 | $ 1,114
Fiscal year before current fiscal year | 17,625 | 17,871 | 10,423
Two years before current fiscal year | 17,036 | 15,857 | 30,346
Three years before current fiscal year | 30,817 | 11,184 | 3,274
Four years before current fiscal year | 23,534 | 5,052 | 8,604
Prior | 33,595 | 14,405 | 10,411
Revolving | 715 | 3,268 | 4,291
Total | 125,027 | 71,304 | 68,463
Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 48,764,162 | 36,285,887 |
Commercial |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 14,983,861 | 10,288,560 |
Writeoff, by Origination Year |  |  |
Total | 63,352 | 36,172 | 41,451
Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 3,113,091 | 1,931,760 |
Originated one year before current year | 2,078,846 | 1,440,650 |
Originated two years before current year | 1,429,431 | 1,286,788 |
Originated three years before current year | 1,180,654 | 777,990 |
Originated four years before current year | 698,629 | 497,232 |
Originated more than five years before current fiscal year | 1,657,541 | 673,411 |
Revolving | 3,678,704 | 2,752,900 |
Revolving to Term | 926,555 | 695,528 |
Total loans | 14,763,451 | 10,056,259 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 820 | 2,892 | 0
Fiscal year before current fiscal year | 14,445 | 13,447 | 6,475
Two years before current fiscal year | 9,200 | 11,797 | 24,022
Three years before current fiscal year | 24,252 | 2,074 | 120
Four years before current fiscal year | 2,873 | 4,061 | 7,245
Prior | 11,762 | 923 | 2,880
Revolving | 0 | 978 | 709
Total | 63,352 | 36,172 | 41,451
Commercial real estate |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 22,050,007 | 16,307,486 |
Writeoff, by Origination Year |  |  |
Total | 43,647 | 18,565 | 11,198
Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 3,773,282 | 2,326,885 |
Originated one year before current year | 2,427,106 | 2,652,462 |
Originated two years before current year | 2,805,294 | 4,252,908 |
Originated three years before current year | 3,762,693 | 2,269,851 |
Originated four years before current year | 2,192,606 | 1,464,609 |
Originated more than five years before current fiscal year | 5,597,057 | 1,911,188 |
Revolving | 231,381 | 123,704 |
Revolving to Term | 1,084,918 | 1,131,441 |
Total loans | 21,874,337 | 16,133,048 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 70 | 0
Fiscal year before current fiscal year | 0 | 204 | 54
Two years before current fiscal year | 3,787 | 84 | 2,808
Three years before current fiscal year | 3,347 | 6,570 | 2,144
Four years before current fiscal year | 18,799 | 2 | 0
Prior | 17,714 | 11,635 | 6,192
Revolving | 0 | 0 | 0
Total | 43,647 | 18,565 | 11,198
BBCC |  |  |
Writeoff, by Origination Year |  |  |
Total | 2,150 | 1,801 | 1,650
BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 57,480 | 81,807 |
Originated one year before current year | 54,323 | 80,974 |
Originated two years before current year | 52,297 | 57,703 |
Originated three years before current year | 36,485 | 35,437 |
Originated four years before current year | 21,026 | 30,912 |
Originated more than five years before current fiscal year | 78,395 | 24,293 |
Revolving | 68,455 | 72,005 |
Revolving to Term | 27,619 | 23,608 |
Total loans | 396,080 | 406,739 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 0 | 670
Fiscal year before current fiscal year | 146 | 1,184 | 548
Two years before current fiscal year | 1,036 | 410 | 362
Three years before current fiscal year | 194 | 56 | 70
Four years before current fiscal year | 23 | 112 | 0
Prior | 751 | 39 | 0
Revolving | 0 | 0 | 0
Total | 2,150 | 1,801 | 1,650
Residential real estate |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 957,369 | 510,184 |
Originated one year before current year | 544,695 | 481,758 |
Originated two years before current year | 595,035 | 1,466,295 |
Originated three years before current year | 1,686,713 | 1,668,493 |
Originated four years before current year | 1,965,514 | 1,580,169 |
Originated more than five years before current fiscal year | 2,717,572 | 1,090,373 |
Revolving | 0 | 43 |
Revolving to Term | 598 | 271 |
Total loans | 8,467,496 | 6,797,586 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 0 | 0
Fiscal year before current fiscal year | 0 | 0 | 0
Two years before current fiscal year | 0 | 0 | 0
Three years before current fiscal year | 268 | 0 | 0
Four years before current fiscal year | 0 | 0 | 0
Prior | 302 | 14 | 256
Revolving | 0 | 0 | 0
Total | 570 | 14 | 256
Residential real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 8,467,496 | 6,797,586 |
Residential real estate | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 955,730 | 509,704 |
Originated one year before current year | 539,011 | 476,698 |
Originated two years before current year | 584,626 | 1,455,085 |
Originated three years before current year | 1,668,796 | 1,662,195 |
Originated four years before current year | 1,960,186 | 1,574,961 |
Originated more than five years before current fiscal year | 2,684,743 | 1,058,175 |
Revolving | 0 | 43 |
Revolving to Term | 598 | 271 |
Total loans | 8,393,690 | 6,737,132 |
Residential real estate | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 1,639 | 480 |
Originated one year before current year | 5,684 | 5,060 |
Originated two years before current year | 10,409 | 11,210 |
Originated three years before current year | 17,917 | 6,298 |
Originated four years before current year | 5,328 | 5,208 |
Originated more than five years before current fiscal year | 32,829 | 32,198 |
Revolving | 0 | 0 |
Revolving to Term | 0 | 0 |
Total loans | 73,806 | 60,454 |
Indirect |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 418,498 | 439,549 |
Originated one year before current year | 297,367 | 281,057 |
Originated two years before current year | 172,620 | 229,189 |
Originated three years before current year | 125,514 | 93,601 |
Originated four years before current year | 43,302 | 38,310 |
Originated more than five years before current fiscal year | 17,779 | 15,072 |
Revolving | 155 | 0 |
Revolving to Term | 0 | 0 |
Total loans | 1,075,235 | 1,096,778 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 609 | 426 | 271
Fiscal year before current fiscal year | 2,456 | 2,426 | 1,447
Two years before current fiscal year | 2,265 | 1,660 | 787
Three years before current fiscal year | 1,277 | 687 | 159
Four years before current fiscal year | 597 | 127 | 152
Prior | 246 | 284 | 132
Revolving | 0 | 0 | 0
Total | 7,450 | 5,610 | 2,948
Indirect | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 1,075,235 | 1,096,778 |
Indirect | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 417,924 | 438,835 |
Originated one year before current year | 296,068 | 279,910 |
Originated two years before current year | 170,873 | 227,691 |
Originated three years before current year | 124,182 | 92,223 |
Originated four years before current year | 42,664 | 37,937 |
Originated more than five years before current fiscal year | 17,567 | 14,810 |
Revolving | 155 | 0 |
Revolving to Term | 0 | 0 |
Total loans | 1,069,433 | 1,091,406 |
Indirect | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 574 | 714 |
Originated one year before current year | 1,299 | 1,147 |
Originated two years before current year | 1,747 | 1,498 |
Originated three years before current year | 1,332 | 1,378 |
Originated four years before current year | 638 | 373 |
Originated more than five years before current fiscal year | 212 | 262 |
Revolving | 0 | 0 |
Revolving to Term | 0 | 0 |
Total loans | 5,802 | 5,372 |
Direct |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 72,436 | 83,869 |
Originated one year before current year | 54,712 | 73,151 |
Originated two years before current year | 49,792 | 66,928 |
Originated three years before current year | 53,745 | 61,669 |
Originated four years before current year | 42,009 | 34,627 |
Originated more than five years before current fiscal year | 135,567 | 81,918 |
Revolving | 236,832 | 108,573 |
Revolving to Term | 4,204 | 3,409 |
Total loans | 649,297 | 514,144 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 276 | 279 | 173
Fiscal year before current fiscal year | 578 | 610 | 1,899
Two years before current fiscal year | 748 | 1,906 | 2,367
Three years before current fiscal year | 1,378 | 1,763 | 746
Four years before current fiscal year | 1,242 | 750 | 1,207
Prior | 2,660 | 1,074 | 543
Revolving | 715 | 2,290 | 3,582
Total | 7,597 | 8,672 | 10,517
Direct | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 649,297 | 514,144 |
Direct | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 72,393 | 83,773 |
Originated one year before current year | 54,308 | 72,838 |
Originated two years before current year | 49,357 | 66,563 |
Originated three years before current year | 53,343 | 61,317 |
Originated four years before current year | 41,664 | 34,159 |
Originated more than five years before current fiscal year | 132,876 | 80,188 |
Revolving | 236,832 | 108,572 |
Revolving to Term | 4,193 | 3,327 |
Total loans | 644,966 | 510,737 |
Direct | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 43 | 96 |
Originated one year before current year | 404 | 313 |
Originated two years before current year | 435 | 365 |
Originated three years before current year | 402 | 352 |
Originated four years before current year | 345 | 468 |
Originated more than five years before current fiscal year | 2,691 | 1,730 |
Revolving | 0 | 1 |
Revolving to Term | 11 | 82 |
Total loans | 4,331 | 3,407 |
Home equity |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 53 | 0 |
Originated one year before current year | 111 | 0 |
Originated two years before current year | 440 | 1,537 |
Originated three years before current year | 2,165 | 301 |
Originated four years before current year | 746 | 1,344 |
Originated more than five years before current fiscal year | 20,272 | 15,925 |
Revolving | 1,443,802 | 1,218,820 |
Revolving to Term | 70,677 | 43,406 |
Total loans | 1,538,266 | 1,281,333 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 0 | 0
Fiscal year before current fiscal year | 0 | 0 | 0
Two years before current fiscal year | 0 | 0 | 0
Three years before current fiscal year | 101 | 34 | 35
Four years before current fiscal year | 0 | 0 | 0
Prior | 160 | 436 | 408
Revolving | 0 | 0 | 0
Total | 261 | 470 | $ 443
Home equity | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 1,538,266 | 1,281,333 |
Home equity | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 11 | 0 |
Originated one year before current year | 71 | 0 |
Originated two years before current year | 395 | 259 |
Originated three years before current year | 1,227 | 210 |
Originated four years before current year | 651 | 1,135 |
Originated more than five years before current fiscal year | 16,913 | 11,005 |
Revolving | 1,443,256 | 1,216,226 |
Revolving to Term | 58,538 | 31,787 |
Total loans | 1,521,062 | 1,260,622 |
Home equity | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 42 | 0 |
Originated one year before current year | 40 | 0 |
Originated two years before current year | 45 | 1,278 |
Originated three years before current year | 938 | 91 |
Originated four years before current year | 95 | 209 |
Originated more than five years before current fiscal year | 3,359 | 4,920 |
Revolving | 546 | 2,594 |
Revolving to Term | 12,139 | 11,619 |
Total loans | 17,204 | 20,711 |
Pass | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 3,073,330 | 1,852,046 |
Originated one year before current year | 1,895,772 | 1,267,721 |
Originated two years before current year | 1,186,468 | 1,145,488 |
Originated three years before current year | 1,064,904 | 699,429 |
Originated four years before current year | 619,076 | 450,332 |
Originated more than five years before current fiscal year | 1,567,563 | 624,522 |
Revolving | 3,458,502 | 2,577,941 |
Revolving to Term | 774,686 | 593,232 |
Total loans | 13,640,301 | 9,210,711 |
Pass | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 3,746,158 | 2,196,306 |
Originated one year before current year | 2,363,809 | 2,555,236 |
Originated two years before current year | 2,510,901 | 3,825,305 |
Originated three years before current year | 3,325,135 | 2,065,037 |
Originated four years before current year | 1,945,116 | 1,362,703 |
Originated more than five years before current fiscal year | 5,082,931 | 1,641,611 |
Revolving | 169,450 | 122,708 |
Revolving to Term | 886,279 | 891,682 |
Total loans | 20,029,779 | 14,660,588 |
Pass | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 57,344 | 79,760 |
Originated one year before current year | 53,469 | 78,420 |
Originated two years before current year | 50,466 | 55,687 |
Originated three years before current year | 35,366 | 33,857 |
Originated four years before current year | 20,106 | 30,215 |
Originated more than five years before current fiscal year | 75,805 | 22,797 |
Revolving | 65,971 | 67,668 |
Revolving to Term | 20,036 | 16,265 |
Total loans | 378,563 | 384,669 |
Special Mention | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 23,368 | 46,935 |
Originated one year before current year | 84,827 | 102,372 |
Originated two years before current year | 88,803 | 32,250 |
Originated three years before current year | 18,830 | 40,221 |
Originated four years before current year | 7,878 | 21,538 |
Originated more than five years before current fiscal year | 8,161 | 20,535 |
Revolving | 82,334 | 80,625 |
Revolving to Term | 14,990 | 28,978 |
Total loans | 329,191 | 373,454 |
Special Mention | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 12,351 | 72,020 |
Originated one year before current year | 20,695 | 31,203 |
Originated two years before current year | 85,266 | 158,254 |
Originated three years before current year | 97,148 | 48,524 |
Originated four years before current year | 102,821 | 37,693 |
Originated more than five years before current fiscal year | 107,590 | 64,357 |
Revolving | 16,239 | 0 |
Revolving to Term | 24,962 | 111,900 |
Total loans | 467,072 | 523,951 |
Special Mention | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 1,579 |
Originated one year before current year | 663 | 1,067 |
Originated two years before current year | 834 | 807 |
Originated three years before current year | 512 | 917 |
Originated four years before current year | 535 | 21 |
Originated more than five years before current fiscal year | 1,490 | 224 |
Revolving | 2,281 | 3,582 |
Revolving to Term | 3,323 | 3,028 |
Total loans | 9,638 | 11,225 |
Substandard | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 16,253 | 27,139 |
Originated one year before current year | 89,293 | 49,340 |
Originated two years before current year | 113,232 | 77,835 |
Originated three years before current year | 62,649 | 35,036 |
Originated four years before current year | 68,265 | 19,307 |
Originated more than five years before current fiscal year | 56,616 | 25,503 |
Revolving | 129,209 | 78,210 |
Revolving to Term | 85,729 | 40,217 |
Total loans | 621,246 | 352,587 |
Substandard | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 14,773 | 47,079 |
Originated one year before current year | 34,761 | 55,923 |
Originated two years before current year | 184,806 | 249,269 |
Originated three years before current year | 294,789 | 102,913 |
Originated four years before current year | 116,261 | 39,466 |
Originated more than five years before current fiscal year | 321,725 | 142,110 |
Revolving | 45,692 | 996 |
Revolving to Term | 120,284 | 76,897 |
Total loans | 1,133,091 | 714,653 |
Substandard | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 86 | 468 |
Originated one year before current year | 191 | 976 |
Originated two years before current year | 474 | 56 |
Originated three years before current year | 304 | 136 |
Originated four years before current year | 26 | 598 |
Originated more than five years before current fiscal year | 724 | 308 |
Revolving | 203 | 755 |
Revolving to Term | 2,877 | 2,876 |
Total loans | 4,885 | 6,173 |
Nonaccrual | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 140 | 2,221 |
Originated one year before current year | 1,617 | 1,072 |
Originated two years before current year | 6,003 | 4,199 |
Originated three years before current year | 7,053 | 1,530 |
Originated four years before current year | 1,001 | 604 |
Originated more than five years before current fiscal year | 654 | 1,357 |
Revolving | 8,659 | 719 |
Revolving to Term | 1,944 | 829 |
Total loans | 27,071 | 12,531 |
Nonaccrual | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 3,693 |
Originated one year before current year | 4,721 | 411 |
Originated two years before current year | 1,282 | 3,579 |
Originated three years before current year | 6,905 | 15,922 |
Originated four years before current year | 5,442 | 1,930 |
Originated more than five years before current fiscal year | 24,308 | 3,231 |
Revolving | 0 | 0 |
Revolving to Term | 23,642 | 118 |
Total loans | 66,300 | 28,884 |
Nonaccrual | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 50 | 0 |
Originated one year before current year | 0 | 114 |
Originated two years before current year | 60 | 312 |
Originated three years before current year | 98 | 177 |
Originated four years before current year | 359 | 63 |
Originated more than five years before current fiscal year | 345 | 119 |
Revolving | 0 | 0 |
Revolving to Term | 1,115 | 551 |
Total loans | 2,027 | 1,336 |
Doubtful | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 3,419 |
Originated one year before current year | 7,337 | 20,145 |
Originated two years before current year | 34,925 | 27,016 |
Originated three years before current year | 27,218 | 1,774 |
Originated four years before current year | 2,409 | 5,451 |
Originated more than five years before current fiscal year | 24,547 | 1,494 |
Revolving | 0 | 15,405 |
Revolving to Term | 49,206 | 32,272 |
Total loans | 145,642 | 106,976 |
Doubtful | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 7,787 |
Originated one year before current year | 3,120 | 9,689 |
Originated two years before current year | 23,039 | 16,501 |
Originated three years before current year | 38,716 | 37,455 |
Originated four years before current year | 22,966 | 22,817 |
Originated more than five years before current fiscal year | 60,503 | 59,879 |
Revolving | 0 | 0 |
Revolving to Term | 29,751 | 50,844 |
Total loans | 178,095 | 204,972 |
Doubtful | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 0 |
Originated one year before current year | 0 | 397 |
Originated two years before current year | 463 | 841 |
Originated three years before current year | 205 | 350 |
Originated four years before current year | 0 | 15 |
Originated more than five years before current fiscal year | 31 | 845 |
Revolving | 0 | 0 |
Revolving to Term | 268 | 888 |
Total loans | $ 967 | $ 3,336 |

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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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