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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, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Risk Category Of Loans [Line Items] |  |  |
Total loans | $ 36,285,887 | $ 32,991,927 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 3,667 | 1,114 |
Fiscal year before current fiscal year | 17,871 | 10,423 |
Two years before current fiscal year | 15,857 | 30,346 |
Three years before current fiscal year | 11,184 | 3,274 |
Four years before current fiscal year | 5,052 | 8,604 |
Prior | 14,405 | 10,411 |
Revolving | 3,268 | 4,291 |
Total | 71,304 | 68,463 | $ 27,281
Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 36,285,887 | 32,991,927 |
Commercial |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 10,288,560 | 9,512,230 |
Writeoff, by Origination Year |  |  |
Total | 36,172 | 41,451 | 6,885
Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 1,931,760 | 1,873,630 |
Originated one year before current year | 1,440,650 | 1,719,159 |
Originated two years before current year | 1,286,788 | 1,039,832 |
Originated three years before current year | 777,990 | 600,282 |
Originated four years before current year | 497,232 | 489,693 |
Originated more than five years before current fiscal year | 673,411 | 583,939 |
Revolving | 2,752,900 | 2,214,453 |
Revolving to Term | 695,528 | 758,478 |
Total loans | 10,056,259 | 9,279,466 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 2,892 | 0 |
Fiscal year before current fiscal year | 13,447 | 6,475 |
Two years before current fiscal year | 11,797 | 24,022 |
Three years before current fiscal year | 2,074 | 120 |
Four years before current fiscal year | 4,061 | 7,245 |
Prior | 923 | 2,880 |
Revolving | 978 | 709 |
Total | 36,172 | 41,451 |
Commercial real estate |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 16,307,486 | 14,140,629 |
Writeoff, by Origination Year |  |  |
Total | 18,565 | 11,198 | 6,519
Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 2,326,885 | 2,279,487 |
Originated one year before current year | 2,652,462 | 3,664,419 |
Originated two years before current year | 4,252,908 | 2,695,350 |
Originated three years before current year | 2,269,851 | 1,636,367 |
Originated four years before current year | 1,464,609 | 1,163,055 |
Originated more than five years before current fiscal year | 1,911,188 | 1,350,392 |
Revolving | 123,704 | 107,225 |
Revolving to Term | 1,131,441 | 1,075,276 |
Total loans | 16,133,048 | 13,971,571 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 70 | 0 |
Fiscal year before current fiscal year | 204 | 54 |
Two years before current fiscal year | 84 | 2,808 |
Three years before current fiscal year | 6,570 | 2,144 |
Four years before current fiscal year | 2 | 0 |
Prior | 11,635 | 6,192 |
Revolving | 0 | 0 |
Total | 18,565 | 11,198 |
BBCC |  |  |
Writeoff, by Origination Year |  |  |
Total | 1,801 | 1,650 | 85
BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 81,807 | 81,840 |
Originated one year before current year | 80,974 | 65,503 |
Originated two years before current year | 57,703 | 46,152 |
Originated three years before current year | 35,437 | 39,072 |
Originated four years before current year | 30,912 | 28,622 |
Originated more than five years before current fiscal year | 24,293 | 21,170 |
Revolving | 72,005 | 70,966 |
Revolving to Term | 23,608 | 48,497 |
Total loans | 406,739 | 401,822 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 670 |
Fiscal year before current fiscal year | 1,184 | 548 |
Two years before current fiscal year | 410 | 362 |
Three years before current fiscal year | 56 | 70 |
Four years before current fiscal year | 112 | 0 |
Prior | 39 | 0 |
Revolving | 0 | 0 |
Total | 1,801 | 1,650 |
Residential real estate |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 510,184 | 453,859 |
Originated one year before current year | 481,758 | 1,513,234 |
Originated two years before current year | 1,466,295 | 1,840,082 |
Originated three years before current year | 1,668,493 | 1,708,506 |
Originated four years before current year | 1,580,169 | 434,861 |
Originated more than five years before current fiscal year | 1,090,373 | 748,622 |
Revolving | 43 | 0 |
Revolving to Term | 271 | 279 |
Total loans | 6,797,586 | 6,699,443 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 0 |
Fiscal year before current fiscal year | 0 | 0 |
Two years before current fiscal year | 0 | 0 |
Three years before current fiscal year | 0 | 0 |
Four years before current fiscal year | 0 | 0 |
Prior | 14 | 256 |
Revolving | 0 | 0 |
Total | 14 | 256 | 344
Residential real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 6,797,586 | 6,699,443 |
Residential real estate | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 509,704 | 453,743 |
Originated one year before current year | 476,698 | 1,508,671 |
Originated two years before current year | 1,455,085 | 1,836,078 |
Originated three years before current year | 1,662,195 | 1,705,131 |
Originated four years before current year | 1,574,961 | 430,783 |
Originated more than five years before current fiscal year | 1,058,175 | 722,987 |
Revolving | 43 | 0 |
Revolving to Term | 271 | 279 |
Total loans | 6,737,132 | 6,657,672 |
Residential real estate | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 480 | 116 |
Originated one year before current year | 5,060 | 4,563 |
Originated two years before current year | 11,210 | 4,004 |
Originated three years before current year | 6,298 | 3,375 |
Originated four years before current year | 5,208 | 4,078 |
Originated more than five years before current fiscal year | 32,198 | 25,635 |
Revolving | 0 | 0 |
Revolving to Term | 0 | 0 |
Total loans | 60,454 | 41,771 |
Indirect |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 439,549 | 393,741 |
Originated one year before current year | 281,057 | 357,294 |
Originated two years before current year | 229,189 | 163,942 |
Originated three years before current year | 93,601 | 83,418 |
Originated four years before current year | 38,310 | 38,285 |
Originated more than five years before current fiscal year | 15,072 | 14,106 |
Revolving | 0 | 0 |
Revolving to Term | 0 | 196 |
Total loans | 1,096,778 | 1,050,982 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 426 | 271 |
Fiscal year before current fiscal year | 2,426 | 1,447 |
Two years before current fiscal year | 1,660 | 787 |
Three years before current fiscal year | 687 | 159 |
Four years before current fiscal year | 127 | 152 |
Prior | 284 | 132 |
Revolving | 0 | 0 |
Total | 5,610 | 2,948 | 2,525
Indirect | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 1,096,778 | 1,050,982 |
Indirect | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 438,835 | 393,369 |
Originated one year before current year | 279,910 | 355,822 |
Originated two years before current year | 227,691 | 162,735 |
Originated three years before current year | 92,223 | 82,871 |
Originated four years before current year | 37,937 | 37,967 |
Originated more than five years before current fiscal year | 14,810 | 13,815 |
Revolving | 0 | 0 |
Revolving to Term | 0 | 196 |
Total loans | 1,091,406 | 1,046,775 |
Indirect | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 714 | 372 |
Originated one year before current year | 1,147 | 1,472 |
Originated two years before current year | 1,498 | 1,207 |
Originated three years before current year | 1,378 | 547 |
Originated four years before current year | 373 | 318 |
Originated more than five years before current fiscal year | 262 | 291 |
Revolving | 0 | 0 |
Revolving to Term | 0 | 0 |
Total loans | 5,372 | 4,207 |
Direct |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 83,869 | 109,439 |
Originated one year before current year | 73,151 | 90,841 |
Originated two years before current year | 66,928 | 93,008 |
Originated three years before current year | 61,669 | 48,947 |
Originated four years before current year | 34,627 | 29,869 |
Originated more than five years before current fiscal year | 81,918 | 71,001 |
Revolving | 108,573 | 75,204 |
Revolving to Term | 3,409 | 4,863 |
Total loans | 514,144 | 523,172 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 279 | 173 |
Fiscal year before current fiscal year | 610 | 1,899 |
Two years before current fiscal year | 1,906 | 2,367 |
Three years before current fiscal year | 1,763 | 746 |
Four years before current fiscal year | 750 | 1,207 |
Prior | 1,074 | 543 |
Revolving | 2,290 | 3,582 |
Total | 8,672 | 10,517 | 10,799
Direct | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 514,144 | 523,172 |
Direct | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 83,773 | 109,372 |
Originated one year before current year | 72,838 | 90,310 |
Originated two years before current year | 66,563 | 92,491 |
Originated three years before current year | 61,317 | 48,387 |
Originated four years before current year | 34,159 | 29,659 |
Originated more than five years before current fiscal year | 80,188 | 67,129 |
Revolving | 108,572 | 75,080 |
Revolving to Term | 3,327 | 4,852 |
Total loans | 510,737 | 517,280 |
Direct | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 96 | 67 |
Originated one year before current year | 313 | 531 |
Originated two years before current year | 365 | 517 |
Originated three years before current year | 352 | 560 |
Originated four years before current year | 468 | 210 |
Originated more than five years before current fiscal year | 1,730 | 3,872 |
Revolving | 1 | 124 |
Revolving to Term | 82 | 11 |
Total loans | 3,407 | 5,892 |
Home equity |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 290 |
Originated one year before current year | 0 | 474 |
Originated two years before current year | 1,537 | 488 |
Originated three years before current year | 301 | 544 |
Originated four years before current year | 1,344 | 1,420 |
Originated more than five years before current fiscal year | 15,925 | 8,810 |
Revolving | 1,218,820 | 1,022,233 |
Revolving to Term | 43,406 | 31,212 |
Total loans | 1,281,333 | 1,065,471 |
Writeoff, by Origination Year |  |  |
Current fiscal year | 0 | 0 |
Fiscal year before current fiscal year | 0 | 0 |
Two years before current fiscal year | 0 | 0 |
Three years before current fiscal year | 34 | 35 |
Four years before current fiscal year | 0 | 0 |
Prior | 436 | 408 |
Revolving | 0 | 0 |
Total | 470 | 443 | $ 124
Home equity | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Total loans | 1,281,333 | 1,065,471 |
Home equity | Performing |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 290 |
Originated one year before current year | 0 | 164 |
Originated two years before current year | 259 | 160 |
Originated three years before current year | 210 | 140 |
Originated four years before current year | 1,135 | 679 |
Originated more than five years before current fiscal year | 11,005 | 4,483 |
Revolving | 1,216,226 | 1,019,389 |
Revolving to Term | 31,787 | 23,918 |
Total loans | 1,260,622 | 1,049,223 |
Home equity | Nonperforming |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 0 |
Originated one year before current year | 0 | 310 |
Originated two years before current year | 1,278 | 328 |
Originated three years before current year | 91 | 404 |
Originated four years before current year | 209 | 741 |
Originated more than five years before current fiscal year | 4,920 | 4,327 |
Revolving | 2,594 | 2,844 |
Revolving to Term | 11,619 | 7,294 |
Total loans | 20,711 | 16,248 |
Pass | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 1,852,046 | 1,826,289 |
Originated one year before current year | 1,267,721 | 1,573,669 |
Originated two years before current year | 1,145,488 | 985,964 |
Originated three years before current year | 699,429 | 520,883 |
Originated four years before current year | 450,332 | 450,911 |
Originated more than five years before current fiscal year | 624,522 | 495,979 |
Revolving | 2,577,941 | 2,051,985 |
Revolving to Term | 593,232 | 651,953 |
Total loans | 9,210,711 | 8,557,633 |
Pass | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 2,196,306 | 2,177,841 |
Originated one year before current year | 2,555,236 | 3,515,702 |
Originated two years before current year | 3,825,305 | 2,563,638 |
Originated three years before current year | 2,065,037 | 1,576,044 |
Originated four years before current year | 1,362,703 | 1,010,351 |
Originated more than five years before current fiscal year | 1,641,611 | 1,161,119 |
Revolving | 122,708 | 103,332 |
Revolving to Term | 891,682 | 960,386 |
Total loans | 14,660,588 | 13,068,413 |
Pass | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 79,760 | 81,102 |
Originated one year before current year | 78,420 | 64,583 |
Originated two years before current year | 55,687 | 44,307 |
Originated three years before current year | 33,857 | 38,086 |
Originated four years before current year | 30,215 | 27,557 |
Originated more than five years before current fiscal year | 22,797 | 19,028 |
Revolving | 67,668 | 68,807 |
Revolving to Term | 16,265 | 33,361 |
Total loans | 384,669 | 376,831 |
Special Mention | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 46,935 | 20,038 |
Originated one year before current year | 102,372 | 90,031 |
Originated two years before current year | 32,250 | 19,953 |
Originated three years before current year | 40,221 | 36,906 |
Originated four years before current year | 21,538 | 25,756 |
Originated more than five years before current fiscal year | 20,535 | 47,357 |
Revolving | 80,625 | 89,765 |
Revolving to Term | 28,978 | 44,348 |
Total loans | 373,454 | 374,154 |
Special Mention | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 72,020 | 69,648 |
Originated one year before current year | 31,203 | 69,946 |
Originated two years before current year | 158,254 | 68,708 |
Originated three years before current year | 48,524 | 27,059 |
Originated four years before current year | 37,693 | 52,107 |
Originated more than five years before current fiscal year | 64,357 | 95,896 |
Revolving | 0 | 3,893 |
Revolving to Term | 111,900 | 64,730 |
Total loans | 523,951 | 451,987 |
Special Mention | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 1,579 | 0 |
Originated one year before current year | 1,067 | 0 |
Originated two years before current year | 807 | 857 |
Originated three years before current year | 917 | 700 |
Originated four years before current year | 21 | 1,001 |
Originated more than five years before current fiscal year | 224 | 349 |
Revolving | 3,582 | 2,144 |
Revolving to Term | 3,028 | 12,728 |
Total loans | 11,225 | 17,779 |
Substandard | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 27,139 | 27,271 |
Originated one year before current year | 49,340 | 41,164 |
Originated two years before current year | 77,835 | 27,990 |
Originated three years before current year | 35,036 | 37,618 |
Originated four years before current year | 19,307 | 10,461 |
Originated more than five years before current fiscal year | 25,503 | 29,981 |
Revolving | 78,210 | 72,703 |
Revolving to Term | 40,217 | 56,716 |
Total loans | 352,587 | 303,904 |
Substandard | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 47,079 | 26,638 |
Originated one year before current year | 55,923 | 56,423 |
Originated two years before current year | 249,269 | 21,401 |
Originated three years before current year | 102,913 | 28,983 |
Originated four years before current year | 39,466 | 61,186 |
Originated more than five years before current fiscal year | 142,110 | 49,558 |
Revolving | 996 | 0 |
Revolving to Term | 76,897 | 48,760 |
Total loans | 714,653 | 292,949 |
Substandard | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 468 | 436 |
Originated one year before current year | 976 | 193 |
Originated two years before current year | 56 | 252 |
Originated three years before current year | 136 | 0 |
Originated four years before current year | 598 | 0 |
Originated more than five years before current fiscal year | 308 | 604 |
Revolving | 755 | 15 |
Revolving to Term | 2,876 | 1,006 |
Total loans | 6,173 | 2,506 |
Nonaccrual | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 2,221 | 32 |
Originated one year before current year | 1,072 | 7,034 |
Originated two years before current year | 4,199 | 0 |
Originated three years before current year | 1,530 | 0 |
Originated four years before current year | 604 | 823 |
Originated more than five years before current fiscal year | 1,357 | 3,411 |
Revolving | 719 | 0 |
Revolving to Term | 829 | 5,461 |
Total loans | 12,531 | 16,761 |
Nonaccrual | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 3,693 | 0 |
Originated one year before current year | 411 | 21,919 |
Originated two years before current year | 3,579 | 10,706 |
Originated three years before current year | 15,922 | 1,975 |
Originated four years before current year | 1,930 | 1,634 |
Originated more than five years before current fiscal year | 3,231 | 8,632 |
Revolving | 0 | 0 |
Revolving to Term | 118 | 1,400 |
Total loans | 28,884 | 46,266 |
Nonaccrual | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 0 |
Originated one year before current year | 114 | 0 |
Originated two years before current year | 312 | 482 |
Originated three years before current year | 177 | 0 |
Originated four years before current year | 63 | 4 |
Originated more than five years before current fiscal year | 119 | 1,105 |
Revolving | 0 | 0 |
Revolving to Term | 551 | 1,402 |
Total loans | 1,336 | 2,993 |
Doubtful | Commercial | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 3,419 | 0 |
Originated one year before current year | 20,145 | 7,261 |
Originated two years before current year | 27,016 | 5,925 |
Originated three years before current year | 1,774 | 4,875 |
Originated four years before current year | 5,451 | 1,742 |
Originated more than five years before current fiscal year | 1,494 | 7,211 |
Revolving | 15,405 | 0 |
Revolving to Term | 32,272 | 0 |
Total loans | 106,976 | 27,014 |
Doubtful | Commercial real estate | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 7,787 | 5,360 |
Originated one year before current year | 9,689 | 429 |
Originated two years before current year | 16,501 | 30,897 |
Originated three years before current year | 37,455 | 2,306 |
Originated four years before current year | 22,817 | 37,777 |
Originated more than five years before current fiscal year | 59,879 | 35,187 |
Revolving | 0 | 0 |
Revolving to Term | 50,844 | 0 |
Total loans | 204,972 | 111,956 |
Doubtful | BBCC | Portfolio Segment After Reclassifications |  |  |
Risk Category Of Loans [Line Items] |  |  |
Originated in current fiscal year | 0 | 302 |
Originated one year before current year | 397 | 727 |
Originated two years before current year | 841 | 254 |
Originated three years before current year | 350 | 286 |
Originated four years before current year | 15 | 60 |
Originated more than five years before current fiscal year | 845 | 84 |
Revolving | 0 | 0 |
Revolving to Term | 888 | 0 |
Total loans | $ 3,336 | $ 1,713 |

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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 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: 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 + 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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