Note 9 - Loans - Average Balance and Interest Income Recognized Related to Nonaccrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Average Recorded Investment	$ 74,673	$ 62,474	$ 71,878	$ 72,442
Interest Income Recognized	79	198	254	528
Commercial Portfolio Segment [Member]
Average Recorded Investment	13,147	26,809	18,982	28,691
Interest Income Recognized	5	0	10	0
Real Estate Construction Portfolio Segment [Member]
Average Recorded Investment	11,266		3,797
Interest Income Recognized	0		0
Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	37,046	18,861	37,446
Interest Income Recognized	74	191	244
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Average Recorded Investment	13,214	16,743	11,652	14,838
Interest Income Recognized	0	$ 7	0	$ 61
Installment and Other Loans [Member ]
Average Recorded Investment	0		1
Interest Income Recognized	$ 0		$ 0