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Note 5 - Derivatives (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Nov. 30, 2022 USD ($) | Oct. 01, 2022 USD ($) | Dec. 31, 2021 USD ($)
Interest Income (Expense), Operating | $ 60,887 | $ 62,357 | $ 182,626 | $ 193,284 |  |  |  |
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Derivative, Number of Instruments Held | 12 |  | 12 |  | 12 |  |  | 12
Derivative Liability, Notional Amount | $ 550,000 |  | $ 550,000 |  | $ 550,000 |  |  | $ 550,000
Commenced Fixed Interest Rate Swaps [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Derivative, Fixed Interest Rate | 0.63% |  | 0.63% |  |  |  |  |
Commenced Fixed Interest Rate Swaps [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Derivative, Fixed Interest Rate | 3.72% |  | 3.72% |  |  |  |  |
Interest Rate Cap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Derivative, Number of Instruments Held |  |  |  |  |  |  | 2 |
Derivative Liability, Notional Amount |  |  |  |  |  | $ 75,000 | $ 150,000 |
Interest Income (Expense), Operating | $ 5,600 | $ 5,500 | $ 16,900 | $ 14,600 |  |  |  |
Interest Rate Cap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Long [Member] |  |  |  |  |  |  |  |
Derivative Liability, Notional Amount |  |  |  |  | $ 225,000 |  |  |

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