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Note 14 - Other Comprehensive Income (Loss) | 9 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Comprehensive Income (Loss) Note [Text Block] | Other Comprehensive Income (Loss): The following tables represent the changes in accumulated other comprehensive income (loss) by component, net of tax, for the three and nine month periods ended September 30, 2025 and 2024.
|  |  |  |  |  | Reclassification |  |  |  |  |  |  |  |  |
|  | Net unrealized |  |  | adjustment for |  |  |  |  |  |  |  |  |
|  | holding (losses) |  |  | (gains) losses |  |  |  |  |  |  |  |  |
|  | gains on available |  |  | realized in income |  |  | Change in funded status |  |  |  |  |
(In Thousands of Dollars) |  | for sale securities |  |  | on fair value hedge |  |  | of post-retirement plan |  |  | Total |
Balance December 31, 2024 |  | $ | (192,860 | ) |  | $ | (403 | ) |  | $ | (2 | ) |  | $ | (193,265 | )
Other comprehensive income before reclassification |  |  | 15,096 |  |  |  | 0 |  |  |  | 0 |  |  |  | 15,096 |
Amounts reclassified from accumulated other comprehensive (loss) income |  |  | 1,054 |  |  |  | (186 | ) |  |  | 0 |  |  |  | 868 |
Net current period other comprehensive (loss) income |  |  | 16,150 |  |  |  | (186 | ) |  |  | 0 |  |  |  | 15,964 |
Balance March 31, 2025 |  | $ | (176,710 | ) |  | $ | (589 | ) |  | $ | (2 | ) |  | $ | (177,301 | )
Other comprehensive income before reclassification |  |  | 517 |  |  |  | 0 |  |  |  | 0 |  |  |  | 517 |
Amounts reclassified from accumulated other comprehensive income |  |  | 0 |  |  |  | 46 |  |  |  | 0 |  |  |  | 46 |
Net current period other comprehensive income |  |  | 517 |  |  |  | 46 |  |  |  | 0 |  |  |  | 563 |
Balance June 30, 2025 |  | $ | (176,193 | ) |  | $ | (543 | ) |  | $ | (2 | ) |  | $ | (176,738 | )
Other comprehensive income before reclassification |  |  | 20,882 |  |  |  | 0 |  |  |  | 0 |  |  |  | 20,882 |
Amounts reclassified from accumulated other comprehensive income |  |  | 758 |  |  |  | 13 |  |  |  | 0 |  |  |  | 771 |
Net current period other comprehensive income |  |  | 21,640 |  |  |  | 13 |  |  |  | 0 |  |  |  | 21,653 |
Balance September 30, 2025 |  | $ | (154,553 | ) |  | $ | (530 | ) |  | $ | (2 | ) |  | $ | (155,085 | )
Balance December 31, 2023 |  | $ | (171,539 | ) |  | $ | (1,013 | ) |  | $ | (2 | ) |  | $ | (172,554 | )
Other comprehensive loss before reclassification |  |  | (15,149 | ) |  |  | 0 |  |  |  | 0 |  |  |  | (15,149 | )
Amounts reclassified from accumulated other comprehensive income |  |  | 1,686 |  |  |  | 1,063 |  |  |  | 0 |  |  |  | 2,749 |
Net current period other comprehensive (loss) income |  |  | (13,463 | ) |  |  | 1,063 |  |  |  | 0 |  |  |  | (12,400 | )
Balance March 31, 2024 |  | $ | (185,002 | ) |  | $ | 50 |  |  | $ | (2 | ) |  | $ | (184,954 | )
Other comprehensive loss before reclassification |  |  | (6,545 | ) |  |  | 0 |  |  |  | 0 |  |  |  | (6,545 | )
Amounts reclassified from accumulated other comprehensive income |  |  | 99 |  |  |  | 167 |  |  |  | 0 |  |  |  | 266 |
Net current period other comprehensive (loss) income |  |  | (6,446 | ) |  |  | 167 |  |  |  | 0 |  |  |  | (6,279 | )
Balance June 30, 2024 |  | $ | (191,448 | ) |  | $ | 217 |  |  | $ | (2 | ) |  | $ | (191,233 | )
Other comprehensive income before reclassification |  |  | 41,452 |  |  |  | 0 |  |  |  | 0 |  |  |  | 41,452 |
Amounts reclassified from accumulated other comprehensive (loss) income |  |  | 333 |  |  |  | (1,503 | ) |  |  | 0 |  |  |  | (1,170 | )
Net current period other comprehensive (loss) income |  |  | 41,785 |  |  |  | (1,503 | ) |  |  | 0 |  |  |  | 40,282 |
Balance September 30, 2024 |  | $ | (149,663 | ) |  | $ | (1,286 | ) |  | $ | (2 | ) |  | $ | (150,951 | )
Amounts reclassified out of each component of accumulated other comprehensive income (loss) were not material for the three and nine month periods ended September 30, 2025 and 2024.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/220/tableOfContent + Details
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