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Note 7 - Comprehensive (Loss) Income (Tables) | 6 Months Ended
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Jun. 30, 2024
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 |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income |  | Affected Line item in the Consolidated Statements of Income
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |  |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |  |
Interest income on cash flow hedges |  | $ | 5,683 |  |  | $ | 3,953 |  |  | $ | 11,312 |  |  | $ | 8,220 |  | Borrowings and deposits expense
|  |  | (1,598 | ) |  |  | (1,189 | ) |  |  | (3,180 | ) |  |  | (2,473 | ) | Income tax expense
|  | $ | 4,085 |  |  | $ | 2,764 |  |  | $ | 8,132 |  |  | $ | 5,747 |  |
Amortization of pension plan net actuarial losses |  | $ | (43 | ) |  | $ | (74 | ) |  | $ | (86 | ) |  | $ | (148 | ) | Other components of net periodic pension expense
|  |  | 11 |  |  |  | 22 |  |  |  | 24 |  |  |  | 45 |  | Income tax benefit
|  | $ | (32 | ) |  | $ | (52 | ) |  | $ | (62 | ) |  | $ | (103 | ) |
Total reclassification |  | $ | 4,053 |  |  | $ | 2,712 |  |  | $ | 8,070 |  |  | $ | 5,644 |  |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | June 30, 2024 |  |  | December 31, 2023 |
|  | (dollars in thousands) |
Investment securities available-for-sale, net of tax |  | $ | (70,064 | ) |  | $ | (57,835 | )
Cash flow hedge, net of tax |  |  | 29,842 |  |  |  | 24,810 |
Defined benefit pension and post-retirement plans, net of tax |  |  | (2,022 | ) |  |  | (2,084 | )
Total |  | $ | (42,244 | ) |  | $ | (35,109 | )

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