Note 5 - DERIVATIVES AND HEDGING ACTIVITIES - Cash flow hedging and fair value (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Interest and Dividend Income	$ 125,420	$ 108,568	$ 360,215	$ 301,162
Interest Expense	65,698	53,313	189,631	135,892
Interest rate caps | Interest Expense
Derivative [Line Items]
Gain (loss) on effects of cash flow hedging	(1,029)	(2,066)	(3,184)	(5,522)
Interest rate swaps | Interest And Dividend Income
Derivative [Line Items]
Gain on effects of fair value hedging	968	828	2,930	828
Interest rate swaps | Interest Expense
Derivative [Line Items]
Gain (loss) on effects of cash flow hedging	(339)	(328)	(1,012)	(830)
Interest rate swaps and collars | Interest And Dividend Income
Derivative [Line Items]
Gain (loss) on effects of cash flow hedging	$ (3,000)	$ (2,495)	$ (8,961)	$ (6,757)