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Note 7 - Components of Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Balance	$ 168,736	$ 148,962	$ 156,409	$ 140,522
Balance	179,220	167,782	179,220	167,782
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(50,740)	(66,044)	(62,093)	(62,556)
Unrealized holding gain on available for sale securities, net of tax	6,015	16,115	17,368	12,627
Balance	(44,725)	(49,929)	(44,725)	(49,929)
AOCI Attributable to Parent [Member]
Balance	(50,412)	(68,354)	(61,765)	(64,866)
Unrealized holding gain on available for sale securities, net of tax	6,015	16,115	17,368	12,627
Balance	(44,397)	(52,239)	(44,397)	(52,239)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	328	(2,310)	328	(2,310)
Unrealized holding gain on available for sale securities, net of tax	0	0	0	0
Balance	$ 328	$ (2,310)	$ 328	$ (2,310)

X

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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