Note 16 - Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes		$ 1,436	$ 2,838	$ 2,212	$ 5,241	$ 7,007	$ 4,049	$ 3,996	$ 4,534	$ 11,727	$ 19,586	$ 20,453
Tax effect		(302)	(494)	(325)	(1,123)	(1,560)	(634)	(647)	(824)	(2,244)	(3,665)	(3,961)
Net income		$ 1,134	$ 2,344	$ 1,887	$ 4,118	$ 5,447	$ 3,415	$ 3,349	$ 3,710	9,483	15,921	16,492
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Realized net holding (loss) gain on available-for-sale securities										(2,058)	(139)	18
Fair value remeasurements on fair value hedges										57
Income before income taxes										(2,001)	(139)	18
Tax effect	[1]									420	29	(4)
Net income										$ (1,581)	$ (110)	$ 14

[1] At tax rates of 21%