Note 9 - Derivatives and Hedging Activities - The Netting Arrangement of Derivative Instruments (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative Assets Interest rate swaps	$ 29,661	$ 27,505
Financial instruments, derivative assets	2,303	5,175
Cash collaterl, derivative assets	22,770	14,010
Net amount, derivative assets	4,588	8,320
Derivative Liabilities Interest rate swaps	30,036	27,964
Financial instruments, derivative liability	2,303	5,175
Cash collaterl, derivative liability	2,250	3,120
Net amount, derivative liability	$ 25,483	$ 19,669