Note 10 - Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net income, basic	$ 3,074	$ 6,162	$ 11,506	$ 16,622
Common shares, basic (in shares)	5,889,687	5,974,961	5,889,687	6,008,607
Basic net income per common share (in dollars per share)	$ 0.52	$ 1.03	$ 1.95	$ 2.77
Dilutive shares for restricted stock awards: (in shares)	252	0	91	0
Net income, diluted	$ 3,074	$ 6,162	$ 11,506	$ 16,622
Weighted average number of common shares outstanding, diluted (in shares)	5,889,939	5,974,961	5,889,778	6,008,607
Diluted net income per common share (in dollars per share)	$ 0.52	$ 1.03	$ 1.95	$ 2.77