Note 8 - Loans and Related Allowance for Loan and Lease Losses - Additional Information on 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	$ 15,668	$ 8,976	$ 11,777	$ 8,725
Interest income recognized	510	81	743	219
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Average recorded investment	3,044	1,428	1,884	1,485
Interest income recognized	119	14	142	45
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Average recorded investment	9,637	5,419	7,446	4,955
Interest income recognized	340	34	455	101
Residential Portfolio Segment [Member]
Average recorded investment	934	1,190	992	1,234
Interest income recognized	10	18	35	42
Commercial And Industrial [Member]
Average recorded investment	1,806	694	1,207	807
Interest income recognized	37	9	102	22
Home Equity Lines of Credit [Member]
Average recorded investment	247	245	248	244
Interest income recognized	$ 4	$ 6	$ 9	$ 9