Note 16 - Balance Sheet Offsetting - Financial Instruments That Are Eligible for Offset in the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Derivative assets, gross	$ 83,434		$ 90,451
Derivatives, Gross Amounts Offset in the Balance Sheet	9,820		46,008
Derivative assets, net	73,614		44,443
Derivatives, collateral posted		$ 70,745	42,930
Derivative assets not offset	2,869		1,513
Derivative liabilities, gross	56,058		51,864
Derivatives, Gross Amounts Offset in the Balance Sheet	0		0
Derivative liabilities, net	56,058		51,864
Derivatives, collateral posted		$ 0	0
Derivative liabilities not offset	$ 56,058		$ 51,864