| Financing Receivable by Origination Year [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revolving | | | Grand | |
| (Dollars in thousands) | | 2026 | | | 2025 | | | 2024 | | | 2023 | | | 2022 | | | Prior | | | Term Total | | | Loans | | | Total | |
| Commercial: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial and Industrial: | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 59,146 | | | $ | 71,218 | | | $ | 40,715 | | | $ | 27,660 | | | $ | 6,246 | | | $ | 41,983 | | | $ | 246,968 | | | $ | 475,717 | | | $ | 722,685 | |
| Grades 5 – 7 | | | 68,792 | | | | 93,854 | | | | 109,112 | | | | 30,939 | | | | 11,036 | | | | 7,091 | | | | 320,824 | | | | 472,465 | | | | 793,289 | |
| Grades 8 – 9 | | | 8,402 | | | | 0 | | | | 0 | | | | 878 | | | | 0 | | | | 318 | | | | 9,598 | | | | 11,457 | | | | 21,055 | |
| Total | | $ | 136,340 | | | $ | 165,072 | | | $ | 149,827 | | | $ | 59,477 | | | $ | 17,282 | | | $ | 49,392 | | | $ | 577,390 | | | $ | 959,639 | | | $ | 1,537,029 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 8 | | | $ | 0 | | | $ | 0 | | | $ | 8 | | | $ | 0 | | | $ | 8 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Vacant Land, Land Development and Residential Construction: | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 15,327 | | | $ | 13,035 | | | $ | 1,569 | | | $ | 1,198 | | | $ | 4,150 | | | $ | 8,015 | | | $ | 43,294 | | | $ | 10,872 | | | $ | 54,166 | |
| Grades 5 – 7 | | | 10,373 | | | | 30,188 | | | | 12,112 | | | | 1,437 | | | | 3,931 | | | | 4,794 | | | | 62,835 | | | | 2,176 | | | | 65,011 | |
| Grades 8 – 9 | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 210 | | | | 210 | | | | 0 | | | | 210 | |
| Total | | $ | 25,700 | | | $ | 43,223 | | | $ | 13,681 | | | $ | 2,635 | | | $ | 8,081 | | | $ | 13,019 | | | $ | 106,339 | | | $ | 13,048 | | | $ | 119,387 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Real Estate – Owner Occupied: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 66,796 | | | $ | 131,568 | | | $ | 102,655 | | | $ | 50,905 | | | $ | 68,957 | | | $ | 63,123 | | | $ | 484,004 | | | $ | 5,548 | | | $ | 489,552 | |
| Grades 5 – 7 | | | 69,694 | | | | 79,362 | | | | 51,022 | | | | 49,271 | | | | 31,043 | | | | 22,759 | | | | 303,151 | | | | 2,634 | | | | 305,785 | |
| Grades 8 – 9 | | | 2,117 | | | | 0 | | | | 1,542 | | | | 3,402 | | | | 0 | | | | 1,485 | | | | 8,546 | | | | 0 | | | | 8,546 | |
| Total | | $ | 138,607 | | | $ | 210,930 | | | $ | 155,219 | | | $ | 103,578 | | | $ | 100,000 | | | $ | 87,367 | | | $ | 795,701 | | | $ | 8,182 | | | $ | 803,883 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Real Estate – Non-Owner Occupied: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 45,326 | | | $ | 66,311 | | | $ | 68,600 | | | $ | 53,676 | | | $ | 78,861 | | | $ | 115,628 | | | $ | 428,402 | | | $ | 7,397 | | | $ | 435,799 | |
| Grades 5 – 7 | | | 131,340 | | | | 105,191 | | | | 143,136 | | | | 146,395 | | | | 56,244 | | | | 68,815 | | | | 651,121 | | | | 4,924 | | | | 656,045 | |
| Grades 8 – 9 | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | |
| Total | | $ | 176,666 | | | $ | 171,502 | | | $ | 211,736 | | | $ | 200,071 | | | $ | 135,105 | | | $ | 184,443 | | | $ | 1,079,523 | | | $ | 12,321 | | | $ | 1,091,844 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Real Estate – Multi-Family and Residential Rental: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 28,586 | | | $ | 32,020 | | | $ | 9,756 | | | $ | 16,263 | | | $ | 12,962 | | | $ | 41,931 | | | $ | 141,518 | | | $ | 4,861 | | | $ | 146,379 | |
| Grades 5 – 7 | | | 167,666 | | | | 101,501 | | | | 48,533 | | | | 13,123 | | | | 14,272 | | | | 6,779 | | | | 351,874 | | | | 0 | | | | 351,874 | |
| Grades 8 – 9 | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | |
| Total | | $ | 196,252 | | | $ | 133,521 | | | $ | 58,289 | | | $ | 29,386 | | | $ | 27,234 | | | $ | 48,710 | | | $ | 493,392 | | | $ | 4,861 | | | $ | 498,253 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| Total Commercial | | $ | 673,565 | | | $ | 724,248 | | | $ | 588,752 | | | $ | 395,147 | | | $ | 287,702 | | | $ | 382,931 | | | $ | 3,052,345 | | | $ | 998,051 | | | $ | 4,050,396 | |
| Total Commercial year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 8 | | | $ | 0 | | | $ | 0 | | | $ | 8 | | | $ | 0 | | | $ | 8 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Retail: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| 1-4 Family Mortgages: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 38,414 | | | $ | 61,729 | | | $ | 39,835 | | | $ | 83,893 | | | $ | 259,194 | | | $ | 262,720 | | | $ | 745,785 | | | $ | 930 | | | $ | 746,715 | |
| Nonperforming | | | 0 | | | | 0 | | | | 226 | | | | 437 | | | | 1,014 | | | | 2,134 | | | | 3,811 | | | | 0 | | | | 3,811 | |
| Total | | $ | 38,414 | | | $ | 61,729 | | | $ | 40,061 | | | $ | 84,330 | | | $ | 260,208 | | | $ | 264,854 | | | $ | 749,596 | | | $ | 930 | | | $ | 750,526 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Other Consumer Loans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 2,305 | | | $ | 5,678 | | | $ | 6,180 | | | $ | 5,385 | | | $ | 2,297 | | | $ | 1,401 | | | $ | 23,246 | | | $ | 91,288 | | | $ | 114,534 | |
| Nonperforming | | | 0 | | | | 0 | | | | 19 | | | | 0 | | | | 14 | | | | 64 | | | | 97 | | | | 0 | | | | 97 | |
| Total | | $ | 2,305 | | | $ | 5,678 | | | $ | 6,199 | | | $ | 5,385 | | | $ | 2,311 | | | $ | 1,465 | | | $ | 23,343 | | | $ | 91,288 | | | $ | 114,631 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 2 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 2 | | | $ | 5 | | | $ | 7 | |
| Total Retail | | $ | 40,719 | | | $ | 67,407 | | | $ | 46,260 | | | $ | 89,715 | | | $ | 262,519 | | | $ | 266,319 | | | $ | 772,939 | | | $ | 92,218 | | | $ | 865,157 | |
| Total Retail year-to-date gross write offs | | $ | 0 | | | $ | 2 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 2 | | | $ | 5 | | | $ | 7 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Total | | $ | 714,284 | | | $ | 791,655 | | | $ | 635,012 | | | $ | 484,862 | | | $ | 550,221 | | | $ | 649,250 | | | $ | 3,825,284 | | | $ | 1,090,269 | | | $ | 4,915,553 | |
| Total year-to-date gross write offs | | $ | 0 | | | $ | 2 | | | $ | 0 | | | $ | 8 | | | $ | 0 | | | $ | 0 | | | $ | 10 | | | $ | 5 | | | $ | 15 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revolving | | | Grand | |
| (Dollars in thousands) | | 2025 | | | 2024 | | | 2023 | | | 2022 | | | 2021 | | | Prior | | | Term Total | | | Loans | | | Total | |
| Commercial: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial and Industrial: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 82,163 | | | $ | 57,225 | | | $ | 38,063 | | | $ | 12,554 | | | $ | 35,423 | | | $ | 14,878 | | | $ | 240,306 | | | $ | 415,084 | | | $ | 655,390 | |
| Grades 5 – 7 | | | 143,638 | | | | 125,617 | | | | 46,445 | | | | 23,137 | | | | 5,396 | | | | 3,092 | | | | 347,325 | | | | 357,379 | | | | 704,704 | |
| Grades 8 – 9 | | | 2,189 | | | | 0 | | | | 732 | | | | 0 | | | | 0 | | | | 327 | | | | 3,248 | | | | 11,180 | | | | 14,428 | |
| Total | | $ | 227,990 | | | $ | 182,842 | | | $ | 85,240 | | | $ | 35,691 | | | $ | 40,819 | | | $ | 18,297 | | | $ | 590,879 | | | $ | 783,643 | | | $ | 1,374,522 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 4 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 4 | | | $ | 7 | | | $ | 11 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Vacant Land, Land Development and Residential Construction: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 22,242 | | | $ | 4,849 | | | $ | 1,703 | | | $ | 7,676 | | | $ | 2,410 | | | $ | 6,752 | | | $ | 45,632 | | | $ | 10,283 | | | $ | 55,915 | |
| Grades 5 – 7 | | | 37,052 | | | | 13,281 | | | | 1,635 | | | | 2,295 | | | | 520 | | | | 5,743 | | | | 60,526 | | | | 731 | | | | 61,257 | |
| Grades 8 – 9 | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 201 | | | | 0 | | | | 201 | | | | 0 | | | | 201 | |
| Total | | $ | 59,294 | | | $ | 18,130 | | | $ | 3,338 | | | $ | 9,971 | | | $ | 3,131 | | | $ | 12,495 | | | $ | 106,359 | | | $ | 11,014 | | | $ | 117,373 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Real Estate – Owner Occupied: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 135,403 | | | $ | 137,672 | | | $ | 51,266 | | | $ | 77,169 | | | $ | 66,198 | | | $ | 18,302 | | | $ | 486,010 | | | $ | 7,686 | | | $ | 493,696 | |
| Grades 5 – 7 | | | 81,750 | | | | 59,874 | | | | 51,642 | | | | 53,479 | | | | 20,585 | | | | 9,085 | | | | 276,415 | | | | 1,285 | | | | 277,700 | |
| Grades 8 – 9 | | | 0 | | | | 0 | | | | 3,502 | | | | 2,674 | | | | 0 | | | | 1,297 | | | | 7,473 | | | | 0 | | | | 7,473 | |
| Total | | $ | 217,153 | | | $ | 197,546 | | | $ | 106,410 | | | $ | 133,322 | | | $ | 86,783 | | | $ | 28,684 | | | $ | 769,898 | | | $ | 8,971 | | | $ | 778,869 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Real Estate – Non-Owner Occupied: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 93,669 | | | $ | 83,447 | | | $ | 55,500 | | | $ | 65,525 | | | $ | 73,727 | | | $ | 53,148 | | | $ | 425,016 | | | $ | 9,709 | | | $ | 434,725 | |
| Grades 5 – 7 | | | 145,795 | | | | 153,731 | | | | 170,018 | | | | 77,964 | | | | 69,335 | | | | 51,411 | | | | 668,254 | | | | 4,963 | | | | 673,217 | |
| Grades 8 – 9 | | | 2,732 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 2,732 | | | | 0 | | | | 2,732 | |
| Total | | $ | 242,196 | | | $ | 237,178 | | | $ | 225,518 | | | $ | 143,489 | | | $ | 143,062 | | | $ | 104,559 | | | $ | 1,096,002 | | | $ | 14,672 | | | $ | 1,110,674 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Real Estate – Multi-Family and Residential Rental: | | | | | | | | | | | | | | | | | | | | | | | | | |
| Grades 1 – 4 | | $ | 40,264 | | | $ | 13,603 | | | $ | 32,341 | | | $ | 9,449 | | | $ | 32,465 | | | $ | 23,399 | | | $ | 151,521 | | | $ | 0 | | | $ | 151,521 | |
| Grades 5 – 7 | | | 165,703 | | | | 55,785 | | | | 128,190 | | | | 27,959 | | | | 1,862 | | | | 6,204 | | | | 385,703 | | | | 0 | | | | 385,703 | |
| Grades 8 – 9 | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | | | | 0 | |
| Total | | $ | 205,967 | | | $ | 69,388 | | | $ | 160,531 | | | $ | 37,408 | | | $ | 34,327 | | | $ | 29,603 | | | $ | 537,224 | | | $ | 0 | | | $ | 537,224 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | |
| Total Commercial | | $ | 952,600 | | | $ | 705,084 | | | $ | 581,037 | | | $ | 359,881 | | | $ | 308,122 | | | $ | 193,638 | | | $ | 3,100,362 | | | $ | 818,300 | | | $ | 3,918,662 | |
| Total Commercial year-to-date gross write offs | | $ | 0 | | | $ | 4 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 4 | | | $ | 7 | | | $ | 11 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Retail: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| 1-4 Family Mortgages: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 62,063 | | | $ | 52,546 | | | $ | 102,023 | | | $ | 280,078 | | | $ | 181,242 | | | $ | 107,389 | | | $ | 785,341 | | | $ | 2,570 | | | $ | 787,911 | |
| Nonperforming | | | 0 | | | | 241 | | | | 451 | | | | 1,047 | | | | 347 | | | | 860 | | | | 2,946 | | | | 0 | | | | 2,946 | |
| Total | | $ | 62,063 | | | $ | 52,787 | | | $ | 102,474 | | | $ | 281,125 | | | $ | 181,589 | | | $ | 108,249 | | | $ | 788,287 | | | $ | 2,570 | | | $ | 790,857 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 22 | | | $ | 61 | | | $ | 3 | | | $ | 86 | | | $ | 0 | | | $ | 86 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Other Consumer Loans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 6,574 | | | $ | 8,299 | | | $ | 7,056 | | | $ | 3,358 | | | $ | 1,274 | | | $ | 894 | | | $ | 27,455 | | | $ | 84,833 | | | $ | 112,288 | |
| Nonperforming | | | 0 | | | | 0 | | | | 0 | | | | 9 | | | | 5 | | | | 42 | | | | 56 | | | | 25 | | | | 81 | |
| Total | | $ | 6,574 | | | $ | 8,299 | | | $ | 7,056 | | | $ | 3,367 | | | $ | 1,279 | | | $ | 936 | | | $ | 27,511 | | | $ | 84,858 | | | $ | 112,369 | |
| Year-to-date gross write offs | | $ | 0 | | | $ | 2 | | | $ | 2 | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 4 | | | $ | 0 | | | $ | 4 | |
| Total Retail | | $ | 68,637 | | | $ | 61,086 | | | $ | 109,530 | | | $ | 284,492 | | | $ | 182,868 | | | $ | 109,185 | | | $ | 815,798 | | | $ | 87,428 | | | $ | 903,226 | |
| Total Retail year-to-date gross write offs | | $ | 0 | | | $ | 2 | | | $ | 2 | | | $ | 22 | | | $ | 61 | | | $ | 3 | | | $ | 90 | | | $ | 0 | | | $ | 90 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Total | | $ | 1,021,237 | | | $ | 766,170 | | | $ | 690,567 | | | $ | 644,373 | | | $ | 490,990 | | | $ | 302,823 | | | $ | 3,916,160 | | | $ | 905,728 | | | $ | 4,821,888 | |
| Total year-to-date gross write offs | | $ | 0 | | | $ | 6 | | | $ | 2 | | | $ | 22 | | | $ | 61 | | | $ | 3 | | | $ | 94 | | | $ | 7 | | | $ | 101 | |
|