Note 17 - Derivatives and Hedging Activities - Derivatives on the Income Statement (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Total amount recognized in interest on investment securities	$ 13,279,000	$ 10,866,000
Recognized on hedged items	(1,054,000)	0
Designated as Hedging Instrument [Member]
Derivative, gain (loss)	449,000	0
Interest Rate Swap [Member]
Total amount recognized in interest on investment securities	13,279	10,866
Recognized on hedged items	1,054,000	0
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative, gain (loss)	$ (605,000)	$ 0