Note 15 - Mortgage Banking Activities - Mortgage Banking Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net gain realized on sale of mortgage loans held for sale	$ 843	$ 505	$ 1,868	$ 1,251
Net change in fair value recognized on loans held for sale	30	(81)	61	(65)
Net change in fair value recognized on rate lock loan commitments	37	(186)	185	40
Net gain recognized	692	452	2,005	1,566
Net loan servicing income	827	1,031	2,605	3,338
Amortization of mortgage servicing rights	(536)	(822)	(1,856)	(2,345)
Change in mortgage servicing rights valuation allowance	0	0	0	0
Net servicing income recognized	291	209	749	993
Other mortgage banking income	129	153	323	323
Total mortgage banking income	1,112	814	3,077	2,882
Foreign Exchange Forward [Member]
Net change in fair value recognized on forward contracts	$ (218)	$ 214	$ (109)	$ 340