Note 6 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Income:
Net income	$ 6,254	$ 7,626
Earnings Per Share:
Basic earnings per share (in dollars per share)	$ 1.06	$ 1.3
Diluted earnings per share (in dollars per share)	$ 1.05	$ 1.28
Weighted Average Number of Shares Outstanding:
Basic shares (in shares)	5,887	5,855
Diluted shares (in shares)	5,946	5,940