Note 16 - Components of Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Balance	$ 140,522	$ 122,687
Net pension gain, net of tax	(2,638)	(35)
Balance	156,409	140,522
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(62,556)	(81,421)
Unrealized holding gain on available for sale securities, net of tax	463	16,233
Reclassification adjustment, net of tax of $700		2,632
Net pension gain, net of tax	0	0
Balance	(62,093)	(62,556)
AOCI Attributable to Parent [Member]
Balance	(64,866)	(83,766)
Unrealized holding gain on available for sale securities, net of tax	463	16,233
Reclassification adjustment, net of tax of $700		2,632
Net pension gain, net of tax	2,638	35
Balance	(61,765)	(64,866)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(2,310)	(2,345)
Unrealized holding gain on available for sale securities, net of tax	0	0
Reclassification adjustment, net of tax of $700		0
Net pension gain, net of tax	2,638	35
Balance	$ 328	$ (2,310)