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Note 8 - Comprehensive (Loss) Income (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
Details about Accumulated Other Comprehensive Income Components |  | Amounts Reclassified from Accumulated Other Comprehensive Income |  | Affected Line item in the Consolidated Statements of Income
|  | Three Months Ended March 31, |  |
|  | 2025 |  |  | 2024 |  |
Interest income on cash flow hedges |  | $ | 4,142 |  |  | $ | 5,629 |  | Borrowings and deposits expense
|  |  | (1,164 | ) |  |  | (1,582 | ) | Income tax expense
|  | $ | 2,978 |  |  | $ | 4,047 |  |
Amortization of pension plan net actuarial losses |  | $ | - |  |  | $ | (43 | ) | Salaries and employee benefits
|  |  | - |  |  |  | 13 |  | Income tax benefit
|  | $ | - |  |  | $ | (30 | ) |
Total reclassification |  | $ | 2,978 |  |  | $ | 4,017 |  |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | March 31, 2025 |  |  | December 31, 2024 |
|  | (dollars in thousands) |
Investment securities available-for-sale, net of tax |  | $ | (64,170 | ) |  | $ | (69,632 | )
Cash flow hedge, net of tax |  |  | 16,775 |  |  |  | 22,481 |
Defined benefit pension and post-retirement plans, net of tax |  |  | (695 | ) |  |  | (695 | )
Total |  | $ | (48,090 | ) |  | $ | (47,846 | )

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