Note 12 - Net Loss Per Share - Computation of Net Income(Loss) Allocated to Common Shareholders (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net loss	$ (2,964)	$ 254	$ (3,996)	$ (3,406)
Less loss (income) allocated to RSUs	30	(4)	41	56
Net income (loss) allocated to common shareholders	$ (2,934)	$ 250	$ (3,955)	$ (3,350)