Note 12 - Schedule of Derivative Designated as Fair Value Hedging Instruments of Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Derivative [Line Items]
Total	$ 22,476	$ 22,198
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Total	6	575
Designated as Hedging Instrument [Member] \| State and Municipal Securities [Member]
Derivative [Line Items]
Recognized on fair value hedge	(674)	831
Recognized on hedge portfolio	1,837	(2,060)
Recognized on remeasurement of fair value hedge	(9)	15
Designated as Hedging Instrument [Member] \| U.S. Government agencies and GSE mortgage backed securities
Derivative [Line Items]
Recognized on fair value hedge	(1,814)	2,468
Recognized on hedge portfolio	702	(675)
Recognized on remeasurement of fair value hedge	$ (36)	$ (4)

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.