Note 9 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Average Recorded Investment	$ 77,319	$ 74,044	$ 77,509	$ 77,523
Interest Income Recognized	133	212	331	386
Commercial Portfolio Segment [Member]
Average Recorded Investment	31,919	24,450	29,648	26,348
Interest Income Recognized	0	31	0	43
Real Estate Construction Portfolio Segment [Member]
Average Recorded Investment	0	4,149	0	4,189
Interest Income Recognized	0	73	0	170
Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	30,073	36,792	33,969	38,445
Interest Income Recognized	126	100	317	157
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Average Recorded Investment	15,284	8,653	13,870	8,541
Interest Income Recognized	7	$ 8	14	$ 16
Installment and Other Loans [Member ]
Average Recorded Investment	43		22
Interest Income Recognized	$ 0		$ 0