Note 3 - Accumulated Other Comprehensive Income - Amount Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Gain (loss) on sale of investment securities	$ 0	$ (6,468)
Income before income taxes	23,872	20,256
Provision for income taxes	3,078	2,046
Net income	20,794	18,210
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Gain (loss) on sale of investment securities	0	(6,468)
Interest income on investment securities	(2,359)	(2,305)
Income before income taxes	(2,359)	(8,773)
Provision for income taxes	495	1,842
Net income	$ (1,864)	$ (6,931)