Note 12 - Net Loss Per Share - Computation of Net Income(Loss) Allocated to Common Shareholders (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net loss	$ (1,032)	$ (3,660)
Less loss allocated to RSUs	11	59
Net loss allocated to common shareholders	$ (1,021)	$ (3,601)