Note 18 - Change in Accumulated Other Comprehensive Income ("AOCI") - Change in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Net other comprehensive income (loss)	$ 7,774	$ 2,464
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
BALANCE	(28,210)	(30,099)
Other comprehensive income (loss) before reclassification	8,152	226
Amounts reclassified from accumulated other comprehensive loss	0	1,663
Net other comprehensive income (loss)	8,152	1,889
BALANCE	(20,058)	(28,210)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
BALANCE	(486)	(288)
Other comprehensive income (loss) before reclassification	99	(198)
Amounts reclassified from accumulated other comprehensive loss	0	0
Net other comprehensive income (loss)	99	(198)
BALANCE	(387)	(486)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
BALANCE	(1,303)	(1,421)
Other comprehensive income (loss) before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	119	118
Net other comprehensive income (loss)	119	118
BALANCE	(1,184)	(1,303)
Accumulated Gain (Loss), Net, Fair Value Hedge, Parent [Member]
BALANCE	(173)	(828)
Other comprehensive income (loss) before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	(596)	655
Net other comprehensive income (loss)	(596)	655
BALANCE	(769)	(173)
AOCI Attributable to Parent [Member]
BALANCE	(30,172)	(32,636)
Other comprehensive income (loss) before reclassification	8,251	28
Amounts reclassified from accumulated other comprehensive loss	(477)	2,436
Net other comprehensive income (loss)	7,774	2,464
BALANCE	$ (22,398)	$ (30,172)