Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Total revenue	$ 9,078	$ 10,646	$ 10,671	$ 9,972	$ 11,071	$ 10,420	$ 8,924	$ 16,729	$ 40,367	$ 47,144
North America [Member]
Total revenue									34,841	40,339
Europe [Member]
Total revenue									596	2,055
Asia [Member]
Total revenue									4,930	4,750
Partner Solutions [Member]
Total revenue									36,516	42,257
Partner Solutions [Member] | North America [Member]
Total revenue									31,226	36,141
Partner Solutions [Member] | Europe [Member]
Total revenue									360	1,460
Partner Solutions [Member] | Asia [Member]
Total revenue									4,930	4,656
Edge to Cloud [Member]
Total revenue									3,851	4,887
Edge to Cloud [Member] | North America [Member]
Total revenue									3,615	4,198
Edge to Cloud [Member] | Europe [Member]
Total revenue									236	595
Edge to Cloud [Member] | Asia [Member]
Total revenue									$ 0	$ 94