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Note 16 - Segment Information (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Reconciliation of Assets from Segment to Consolidated [Table Text Block] |
|  | Trust |  |  | Bank |  |  | Consolidated |
(In Thousands of Dollars) |  | Segment |  |  | Segment |  |  | Segment totals |
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Total assets for reportable segments |  | $ | 15,350 |  |  | $ | 5,221,722 |  |  | $ | 5,237,072 |
Eliminations and other |  |  |  |  |  |  |  |  |  |  | (1,497 | )
Total consolidated assets |  |  |  |  |  |  |  |  |  | $ | 5,235,575 |
|  | Trust |  |  | Bank |  |  | Consolidated |
(In Thousands of Dollars) |  | Segment |  |  | Segment |  |  | Segment totals |
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Total assets for reportable segments |  | $ | 17,204 |  |  | $ | 5,104,012 |  |  | $ | 5,121,216 |
Eliminations and other |  |  |  |  |  |  |  |  |  |  | (2,292 | )
Total consolidated assets |  |  |  |  |  |  |  |  |  | $ | 5,118,924 |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Trust |  |  | Bank |  |  | Consolidated |
(In Thousands of Dollars) |  | Segment |  |  | Segment |  |  | Segment totals |
For Three Months Ended September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Interest income - loans including fees |  | $ | 0 |  |  | $ | 48,603 |  |  | $ | 48,603 |
Interest income - investments |  |  | 0 |  |  |  | 9,809 |  |  |  | 9,809 |
Trust fees |  |  | 2,745 |  |  |  | 0 |  |  |  | 2,745 |
Retirement plan consulting fees |  |  | 1,060 |  |  |  | 0 |  |  |  | 1,060 |
Total consolidated segment revenues |  |  | 3,805 |  |  |  | 58,412 |  |  |  | 62,217 |
Reconciliation of revenue |  |  |  |  |  |  |  |  |  |  |  |
Other revenues |  |  |  |  |  |  |  |  |  |  | 8,579 |
Total consolidated revenues |  |  |  |  |  |  |  |  |  |  | 70,796 |
Interest expense - deposits |  |  | 0 |  |  |  | 20,372 |  |  |  | 20,372 |
Interest expense - borrowings |  |  | 0 |  |  |  | 2,687 |  |  |  | 2,687 |
Provision for credit losses and unfunded loans |  |  | 0 |  |  |  | 1,419 |  |  |  | 1,419 |
Payroll expenses |  |  | 1,525 |  |  |  | 14,443 |  |  |  | 15,968 |
Total consolidated segment expenses |  |  | 1,525 |  |  |  | 38,921 |  |  |  | 40,446 |
Segment profit |  |  | 2,280 |  |  |  | 19,491 |  |  |  | 21,771 |
Reconciliation of expenses |  |  |  |  |  |  |  |  |  |  |  |
Other expenses * |  |  |  |  |  |  |  |  |  |  | 15,711 |
Total consolidated expenses |  |  |  |  |  |  |  |  |  |  | 56,157 |
Total consolidated income before taxes |  |  |  |  |  |  |  |  |  | $ | 14,639 |
Other segment disclosures |  |  |  |  |  |  |  |  |  |  |  |
Occupancy and equipment |  |  | 143 |  |  |  | 4,217 |  |  |  | 4,360 |
Intangible amortization |  |  | 23 |  |  |  | 695 |  |  |  | 718 |
|  | Trust |  |  | Bank |  |  | Consolidated |
(In Thousands of Dollars) |  | Segment |  |  | Segment |  |  | Segment totals |
For Nine Months Ended September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Interest income - loans including fees |  | $ | 0 |  |  | $ | 142,361 |  |  | $ | 142,361 |
Interest income - investments |  |  | 0 |  |  |  | 29,052 |  |  |  | 29,052 |
Trust fees |  |  | 7,982 |  |  |  | 0 |  |  |  | 7,982 |
Retirement plan consulting fees |  |  | 2,641 |  |  |  | 0 |  |  |  | 2,641 |
Total consolidated segment revenues |  |  | 10,623 |  |  |  | 171,413 |  |  |  | 182,036 |
Reconciliation of revenue |  |  |  |  |  |  |  |  |  |  |  |
Other revenues |  |  |  |  |  |  |  |  |  |  | 26,370 |
Total consolidated revenues |  |  |  |  |  |  |  |  |  |  | 208,406 |
Interest expense - deposits |  |  | 0 |  |  |  | 60,329 |  |  |  | 60,329 |
Interest expense - borrowings |  |  | 0 |  |  |  | 8,620 |  |  |  | 8,620 |
Provision for credit losses and unfunded loans |  |  | 0 |  |  |  | 4,763 |  |  |  | 4,763 |
Payroll expenses |  |  | 4,440 |  |  |  | 42,382 |  |  |  | 46,822 |
Total consolidated segment expenses |  |  | 4,440 |  |  |  | 116,094 |  |  |  | 120,534 |
Segment profit |  |  | 6,183 |  |  |  | 55,319 |  |  |  | 61,502 |
Reconciliation of expenses |  |  |  |  |  |  |  |  |  |  |  |
Other expenses * |  |  |  |  |  |  |  |  |  |  | 40,559 |
Total consolidated expenses |  |  |  |  |  |  |  |  |  |  | 161,093 |
Total consolidated income before taxes |  |  |  |  |  |  |  |  |  | $ | 47,313 |
Other segment disclosures |  |  |  |  |  |  |  |  |  |  |  |
Occupancy and equipment |  |  | 426 |  |  |  | 12,165 |  |  |  | 12,591 |
Intangible amortization |  |  | 69 |  |  |  | 2,119 |  |  |  | 2,188 |
|  | Trust |  |  | Bank |  |  | Consolidated |
(In Thousands of Dollars) |  | Segment |  |  | Segment |  |  | Segment totals |
For Three Months Ended September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Interest income - loans including fees |  | $ | 0 |  |  | $ | 46,989 |  |  | $ | 46,989 |
Interest income - investments |  |  | 0 |  |  |  | 9,175 |  |  |  | 9,175 |
Trust fees |  |  | 2,544 |  |  |  | 0 |  |  |  | 2,544 |
Retirement plan consulting fees |  |  | 677 |  |  |  | 0 |  |  |  | 677 |
Total consolidated segment revenues |  |  | 3,221 |  |  |  | 56,164 |  |  |  | 59,385 |
Reconciliation of revenue |  |  |  |  |  |  |  |  |  |  |  |
Other revenues |  |  |  |  |  |  |  |  |  |  | 10,878 |
Total consolidated revenues |  |  |  |  |  |  |  |  |  |  | 70,263 |
Interest expense - deposits |  |  | 0 |  |  |  | 21,547 |  |  |  | 21,547 |
Interest expense - borrowings |  |  | 0 |  |  |  | 4,500 |  |  |  | 4,500 |
Provision for credit losses and unfunded loans |  |  | 0 |  |  |  | 7,008 |  |  |  | 7,008 |
Payroll expenses |  |  | 1,429 |  |  |  | 13,428 |  |  |  | 14,857 |
Total consolidated segment expenses |  |  | 1,429 |  |  |  | 46,483 |  |  |  | 47,912 |
Segment profit |  |  | 1,792 |  |  |  | 9,681 |  |  |  | 11,473 |
Reconciliation of expenses |  |  |  |  |  |  |  |  |  |  |  |
Other expenses * |  |  |  |  |  |  |  |  |  |  | 12,218 |
Total consolidated expenses |  |  |  |  |  |  |  |  |  |  | 60,130 |
Total consolidated income before taxes |  |  |  |  |  |  |  |  |  | $ | 10,133 |
Other segment disclosures |  |  |  |  |  |  |  |  |  |  |  |
Occupancy and equipment |  |  | 79 |  |  |  | 3,877 |  |  |  | 3,956 |
Intangible amortization |  |  | 12 |  |  |  | 617 |  |  |  | 629 |
|  | Trust |  |  | Bank |  |  | Consolidated |
(In Thousands of Dollars) |  | Segment |  |  | Segment |  |  | Segment totals |
For Nine Months Ended September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Interest income - loans including fees |  | $ | 0 |  |  | $ | 138,519 |  |  | $ | 138,519 |
Interest income - investments |  |  | 0 |  |  |  | 27,399 |  |  |  | 27,399 |
Trust fees |  |  | 7,398 |  |  |  | 0 |  |  |  | 7,398 |
Retirement plan consulting fees |  |  | 1,918 |  |  |  | 0 |  |  |  | 1,918 |
Total consolidated segment revenues |  |  | 9,316 |  |  |  | 165,918 |  |  |  | 175,234 |
Reconciliation of revenue |  |  |  |  |  |  |  |  |  |  |  |
Other revenues |  |  |  |  |  |  |  |  |  |  | 24,891 |
Total consolidated revenues |  |  |  |  |  |  |  |  |  |  | 200,125 |
Interest expense - deposits |  |  | 0 |  |  |  | 60,096 |  |  |  | 60,096 |
Interest expense - borrowings |  |  | 0 |  |  |  | 14,098 |  |  |  | 14,098 |
Provision for credit losses and unfunded loans |  |  | 0 |  |  |  | 7,671 |  |  |  | 7,671 |
Payroll expenses |  |  | 4,159 |  |  |  | 40,297 |  |  |  | 44,456 |
Total consolidated segment expenses |  |  | 4,159 |  |  |  | 122,162 |  |  |  | 126,321 |
Segment profit |  |  | 5,157 |  |  |  | 43,756 |  |  |  | 48,913 |
Reconciliation of expenses |  |  |  |  |  |  |  |  |  |  |  |
Other expenses * |  |  |  |  |  |  |  |  |  |  | 36,061 |
Total consolidated expenses |  |  |  |  |  |  |  |  |  |  | 162,382 |
Total consolidated income before taxes |  |  |  |  |  |  |  |  |  | $ | 37,743 |
Other segment disclosures |  |  |  |  |  |  |  |  |  |  |  |
Occupancy and equipment |  |  | 269 |  |  |  | 11,215 |  |  |  | 11,484 |
Intangible amortization |  |  | 36 |  |  |  | 1,911 |  |  |  | 1,947 |

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