Note 9 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Average Recorded Investment	$ 69,577	$ 77,699
Interest Income Recognized	235	436
Commercial Portfolio Segment [Member]
Average Recorded Investment	23,395	27,351
Interest Income Recognized	4	0
Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	36,214	37,909
Interest Income Recognized	231	429
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Average Recorded Investment	9,965	12,439
Interest Income Recognized	0	$ 7
Installment and Other Loans [Member ]
Average Recorded Investment	3
Interest Income Recognized	$ 0