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, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net loss	$ (3,386)	$ (2,964)	$ (13,520)	$ (3,996)
Less loss allocated to RSUs	18	30	79	41
Net loss allocated to common shareholders	$ (3,368)	$ (2,934)	$ (13,441)	$ (3,955)