Note 14 - Change in Accumulated Other Comprehensive Income ("AOCI") - Change in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other comprehensive loss, net of tax	$ 5,173	$ (5,784)	$ 6,212	$ (5,307)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
BALANCE	(30,021)	(37,679)	(30,099)	(38,404)
Other comprehensive (loss) income before reclassification	6,344	(6,540)	4,759	(5,815)
Amounts reclassified from accumulated other comprehensive income	0	0	1,663	0
Other comprehensive loss, net of tax	6,344	(6,540)	6,422	(5,815)
BALANCE	(23,677)	(44,219)	(23,677)	(44,219)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
BALANCE	(288)	(600)	(288)	(600)
Other comprehensive (loss) income before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive loss, net of tax	0	0	0	0
BALANCE	(288)	(600)	(288)	(600)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
BALANCE	(1,362)	(1,479)	(1,421)	(1,539)
Other comprehensive (loss) income before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	29	29	88	89
Other comprehensive loss, net of tax	29	29	88	89
BALANCE	(1,333)	(1,450)	(1,333)	(1,450)
Accumulated Gain (Loss), Net, Fair Value Hedge, Parent [Member]
BALANCE	74	(308)	(828)	0
Other comprehensive (loss) income before reclassification	(1,200)	727	(298)	419
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive loss, net of tax	(1,200)	727	(298)	419
BALANCE	(1,126)	419	(1,126)	419
AOCI Attributable to Parent [Member]
BALANCE	(31,597)	(40,066)	(32,636)	(40,543)
Other comprehensive (loss) income before reclassification	5,144	(5,813)	4,461	(5,396)
Amounts reclassified from accumulated other comprehensive income	29	29	1,751	89
Other comprehensive loss, net of tax	5,173	(5,784)	6,212	(5,307)
BALANCE	$ (26,424)	$ (45,850)	$ (26,424)	$ (45,850)