Note 11 - Earnings Per Common Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net income	$ 3,729	$ 2,436
Weighted average shares outstanding – basic (in shares)	6,238,973	4,863,823
Potentially dilutive common shares – restricted stock units (in shares)	6,732	8,274
Weighted average shares outstanding – diluted (in shares)	6,245,705	4,872,097
Basic (in dollars per share)	$ 0.60	$ 0.50
Diluted (in dollars per share)	$ 0.60	$ 0.50