Note 3 - Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net income (loss)	$ 2,847	$ (1,487)
Weighted average number of common shares outstanding (in shares)	18,726,459	16,745,531
Basic net income (loss) per share (in dollars per share)	$ 0.15	$ (0.09)
Non-vested stock awards (1) (in shares)	662,030	0
Weighted average number of common shares outstanding (in shares)	19,388,489	16,745,531
Diluted net income (loss) per share (in dollars per share)	$ 0.15	$ (0.09)