Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Total revenue	$ 10,420	$ 14,641	$ 36,073	$ 43,917
North America [Member]
Total revenue	8,919	12,714	30,449	37,619
Europe [Member]
Total revenue	785	341	1,819	1,563
Asia [Member]
Total revenue	716	1,586	3,805	4,735
Partner Solutions [Member]
Total revenue	9,145	12,556	33,160	37,341
Partner Solutions [Member] | North America [Member]
Total revenue	7,819	10,851	28,104	31,687
Partner Solutions [Member] | Europe [Member]
Total revenue	613	164	1,344	1,086
Partner Solutions [Member] | Asia [Member]
Total revenue	713	1,541	3,712	4,568
Edge to Cloud [Member]
Total revenue	1,275	2,085	2,913	6,576
Edge to Cloud [Member] | North America [Member]
Total revenue	1,100	1,863	2,345	5,932
Edge to Cloud [Member] | Europe [Member]
Total revenue	172	177	475	477
Edge to Cloud [Member] | Asia [Member]
Total revenue	$ 3	$ 45	$ 93	$ 167