Note 15 - Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022		Sep. 30, 2021
Balance	$ 327,431	$ 347,633	$ 354,792	[1]	$ 337,894
Balance	313,390	350,387	313,390		350,387
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(37,886)	4,430	(1,701)		7,920
Net unrealized gains (losses) on securities available for sale, net of tax	(19,786)	(1,717)	(55,971)		(5,207)
Net unrealized gains on cash flow hedges, net of tax	0	0	0		0
Balance	(57,672)	2,713	(57,672)		2,713
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	30	(2,761)	(2,212)		(3,846)
Net unrealized gains (losses) on securities available for sale, net of tax	0	0	0		0
Net unrealized gains on cash flow hedges, net of tax	1,153	181	3,395		1,266
Balance	1,183	(2,580)	1,183		(2,580)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(1,162)	(1,637)	(1,162)		(1,637)
Net unrealized gains (losses) on securities available for sale, net of tax	0	0	0		0
Net unrealized gains on cash flow hedges, net of tax	0	0	0		0
Balance	(1,162)	(1,637)	(1,162)		(1,637)
AOCI Attributable to Parent [Member]
Balance	(39,018)	32	(5,075)		2,437
Net unrealized gains (losses) on securities available for sale, net of tax	(19,786)	(1,717)	(55,971)		(5,207)
Net unrealized gains on cash flow hedges, net of tax	1,153	181	3,395		1,266
Balance	$ (57,651)	$ (1,504)	$ (57,651)		$ (1,504)

[1] Derived from audited consolidated financial statements