Note 10 - Net Loss Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net loss attributable to common shareholders	$ (4,786)	$ (3,538)
Weighted average common shares outstanding used to compute net loss per share, basic and diluted (in shares)	126,624	92,587
Net loss per share of common stock, basic and diluted (in dollars per share)	$ (0.04)	$ (0.04)