Note 8 - Loans - Average Balance and Interest Income Recognized Related to Non-accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Average Recorded Investment	$ 101,236	$ 69,577
Interest Income Recognized	51	235
Commercial Portfolio Segment [Member]
Average Recorded Investment	15,097	23,395
Interest Income Recognized	3	4
Real Estate Construction Portfolio Segment [Member]
Average Recorded Investment	28,099
Interest Income Recognized	0
Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	43,871	36,214
Interest Income Recognized	48	231
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Average Recorded Investment	14,169	9,965
Interest Income Recognized	$ 0	0
Installment and Other Loans [Member ]
Average Recorded Investment		3
Interest Income Recognized		$ 0