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Note 6 - Derivatives (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
Note 6 - Derivatives (Details Textual) $ in Thousands	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Oct. 01, 2022 USD ($)
Interest Income (Expense), Operating	$ 117,298	$ 102,017	$ 339,741	$ 246,656
Interest Rate Swap [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivative, Number of Instruments Held	11		11
Derivative Liability, Notional Amount	$ 625,000		$ 625,000
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	$ 2,400	$ 4,700	$ 7,500	$ 13,300
Interest Rate Cap [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Short [Member]
Derivative Liability, Notional Amount					$ 225,000
Interest Rate Cap [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Long [Member]
Derivative Liability, Notional Amount					$ 225,000