Note 13 - Schedule of Derivative Designated as Fair Value Hedging Instruments of Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Derivative [Line Items]
Total	$ 30,631	$ 23,110	$ 53,107	$ 45,308
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Total	18	601	24	1,176
Designated as Hedging Instrument [Member] \| State and Municipal Securities [Member]
Derivative [Line Items]
Recognized on fair value hedge	(668)	815	(1,342)	1,646
Recognized on hedge portfolio	683	(668)	1,385	(1,343)
Recognized on remeasurement of fair value hedge	1	25	(8)	40
Designated as Hedging Instrument [Member] \| U.S. Government agencies and GSE mortgage backed securities
Derivative [Line Items]
Recognized on fair value hedge	(1,715)	2,430	(3,529)	4,898
Recognized on hedge portfolio	1,715	(2,034)	3,552	(4,094)
Recognized on remeasurement of fair value hedge	$ 2	$ 33	$ (34)	$ 29

Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.