Note 15 - Earnings Per Common Share - Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Weighted average number of common shares outstanding used in basic earnings per common share calculation (in shares)	4,350,215	4,358,022
Options (in shares)	14,807	17,847
Restricted stock awards (in shares)	12,066	13,601
Weighted average number of common shares outstanding adjusted for effect of dilutive securities (in shares)	4,377,088	4,389,470
Net income	$ 6,005	$ 8,045
Basic earnings per share (in dollars per share)	$ 1.38	$ 1.85
Diluted earnings per share (in dollars per share)	$ 1.37	$ 1.83