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Note 4 - Derivatives (Details Textual) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Nov. 30, 2022 USD ($) | Oct. 01, 2022 USD ($) | Dec. 31, 2021 USD ($)
Interest Income (Expense), Operating | $ 61,439 | $ 63,843 | $ 121,739 | $ 130,927 |  |  |  |
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 | $ 5,700 | $ 5,000 | $ 11,300 | $ 9,300 |  |  |  |
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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