Note 9 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Average Recorded Investment	$ 62,474	$ 67,775	$ 72,442	$ 74,239
Interest Income Recognized	198	197	528	540
Commercial Portfolio Segment [Member]
Average Recorded Investment	26,809	16,379	28,691	22,989
Interest Income Recognized	0	0	0	0
Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	18,861	37,017	28,878	37,964
Interest Income Recognized	191	140	508	297
Real Estate Construction Portfolio Segment [Member]
Average Recorded Investment		4,548		4,310
Interest Income Recognized		50		220
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Average Recorded Investment	16,743	9,831	14,838	8,976
Interest Income Recognized	7	$ 7	20	$ 23
Installment and Other Loans [Member ]
Average Recorded Investment	61		35
Interest Income Recognized	$ 0		$ 0