Note 15 - Mortgage Banking Activities - Mortgage Banking Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net gain realized on sale of mortgage loans held for sale	$ 505	$ 166	$ 1,251	$ 670
Net change in fair value recognized on loans held for sale	(81)	(113)	(65)	(70)
Net change in fair value recognized on rate lock loan commitments	(186)	134	40	1,324
Net gain recognized	452	288	1,566	1,390
Net loan servicing income	1,031	1,172	3,338	3,089
Amortization	(822)	(869)	(2,345)	(2,206)
Change in mortgage servicing rights valuation allowance	0	0	0	0
Net servicing income recognized	209	303	993	883
Other mortgage banking income	153	112	323	728
Total mortgage banking income	814	703	2,882	3,001
Foreign Exchange Forward [Member]
Net change in fair value recognized on forward contracts	$ 214	$ 101	$ 340	$ (534)