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Note 4 - Derivatives (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Oct. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)
Interest Income (Expense), Net	$ 62,357	$ 78,161	$ 193,284	$ 224,110
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative, Number of Instruments Held					11		2	11
Derivative Liability, Notional Amount					$ 500,000			$ 500,000
Commenced Fixed Interest Rate Swaps [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative, Fixed Interest Rate					0.63%
Commenced Fixed Interest Rate Swaps [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative, Fixed Interest Rate					3.41%
Interest Rate Cap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Liability, Notional Amount						$ 75,000	$ 150,000
Interest Income (Expense), Net	$ 5,500	$ 1,200	$ 14,600	$ 500
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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Fixed interest rate related to the interest rate derivative.

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