Note 7 - Derivatives and Hedging Activities - Cash flow hedging and fair value (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Interest and Dividend Income	$ 481,857	$ 413,410	$ 292,571
Interest expense	250,069	192,404	61,451
Interest rate caps \| Interest Expense
Derivative [Line Items]
Gain (loss) on effects of cash flow hedging	(4,032)	(7,639)	(1,422)
Interest rate swaps \| Interest And Dividend Income
Derivative [Line Items]
Gain on effects of fair value hedging	3,380	1,746
Interest rate swaps \| Interest Expense
Derivative [Line Items]
Gain (loss) on effects of cash flow hedging	(1,271)	(1,167)	500
Interest rate swaps and collars \| Interest And Dividend Income
Derivative [Line Items]
Gain (loss) on effects of cash flow hedging	$ (11,431)	$ (10,763)	$ (829)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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