Note 15 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Revenue	$ 53,927	$ 39,794	$ 138,071	$ 105,411
Property and equipment, net	3,252		3,252		$ 2,663
North America [Member]
Revenue	24,181	18,051	62,370	46,522
UNITED STATES
Revenue	24,200	18,200	62,300	46,400
Property and equipment, net	849		849		976
EMEA [Member]
Revenue	14,799	10,812	39,743	30,381
CHINA
Property and equipment, net	1,864		1,864		1,219
Asia Pacific [Member]
Revenue	14,947	$ 10,931	35,958	$ 28,508
Other Countries [Member]
Property and equipment, net	$ 539		$ 539		$ 468