Note 14 - Segment Information - Net Revenue From Unaffiliated Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net revenues	$ 21,820	$ 13,275	$ 41,376	$ 24,505
UNITED STATES
Net revenues	6,632	4,954	12,379	10,673
Non-US [Member]
Net revenues	$ 15,188	$ 8,321	$ 28,997	$ 13,832