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Note 4 - DERIVATIVES AND HEDGING ACTIVITIES - Cash flow hedging and fair value (Details) - Non Designated - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Interest And Dividend Income |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |
Income and expense line items presented in the consolidated statements of income | $ 98,377 | $ 68,205 | $ 192,594 | $ 119,267
Interest Expense |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |
Income and expense line items presented in the consolidated statements of income | 45,172 | 8,805 | 82,579 | 14,134
Interest Rate Caps On Deposits | Interest Expense |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |
Gain Loss From Components Excluded From Assessment Of Cash Flow Hedge Effectiveness Net | (1,875) | 241 | (3,456) | 462
Interest Rate Swaps on Variable Rate Loans | Interest And Dividend Income |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |
Gain Loss From Components Excluded From Assessment Of Cash Flow Hedge Effectiveness Net | (2,207) | 671 | (4,262) | 1,142
Interest Rate Swap on Junior Subordinated Debentures | Interest Expense |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract] |  |  |  |
Gain Loss From Components Excluded From Assessment Of Cash Flow Hedge Effectiveness Net | $ (275) | $ 240 | $ (502) | $ 463

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