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, 2022	Dec. 31, 2021
Weighted average number of common shares outstanding used in basic earnings per common share calculation (in shares)	4,358,022	4,471,363
Options (in shares)	17,847	16,361
Restricted stock awards (in shares)	13,601	16,214
Weighted average number of common shares outstanding adjusted for effect of dilutive securities (in shares)	4,389,470	4,503,938
Net income	$ 8,045	$ 13,564
Basic earnings per common share (in dollars per share)	$ 1.85	$ 3.03
Diluted earnings per common share (in dollars per share)	$ 1.83	$ 3.01