Note 9 - Earnings (Loss) Per Share Basic and Fully Diluted - Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 30, 2020
Net income (loss) - basic	$ 4,808		$ (7,187)
Reversal of gain due to change in fair value of warrant liability	(3,545)		0
Net income (loss) - diluted	$ 1,263		$ (7,187)
Weighted average shares outstanding - basic (in shares)	203,589,531	189,844,867	189,844,867
Diluted stock options (in shares)	168,309		0
Diluted warrants (in shares)	1,912,544		0
Diluted preferred shares (in shares)	32,016,491		0
Weighted average shares outstanding - diluted (in shares)	237,686,875	189,844,867	189,844,867
Basic earnings (loss) per share (in dollars per share)	$ 0.02	$ (0.04)	$ (0.04)
Diluted earnings (loss) per share (in dollars per share)	$ 0.01	$ (0.04)	$ (0.04)