Note 15 - Balance Sheet Offsetting - Financial Instruments That Are Eligible for Offset in the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative assets, gross	$ 55,138	$ 54,268
Derivatives, Gross Amounts Offset in the Balance Sheet	2,857	335
Derivative assets, net	52,281	53,933
Derivatives, collateral posted	50,243	44,860
Derivative assets not offset	2,038	9,073
Derivative liabilities, gross	42,014	45,762
Derivatives, Gross Amounts Offset in the Balance Sheet	0	0
Derivative liabilities, net	42,014	45,762
Derivatives, collateral posted	0	0
Derivative liabilities not offset	$ 42,014	$ 45,762