Note 6 - Earnings Per Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net income available to common shareholders	$ 4,967	$ 5,340	$ 14,960	$ 17,742
Weighted-average common shares outstanding (in shares)	5,735,926	5,687,553	5,731,313	5,669,454
Basic EPS (in dollars per share)	$ 0.87	$ 0.94	$ 2.61	$ 3.13
Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares)	40,588	37,703	36,792	37,563
Weighted-average common and potentially dilutive shares outstanding (in shares)	5,776,514	5,725,256	5,768,105	5,707,017
Diluted EPS (in dollars per share)	$ 0.86	$ 0.93	$ 2.59	$ 3.11