Note 8 - Goodwill and Intangible Assets, Net - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2019	Dec. 31, 2018
Total intangible assets, Gross Carrying Amount		$ 24,426	$ 8,361
Total intangible assets, Accumulated Amortization		7,073	5,661
Intangible assets, net		$ 17,353	2,700
Customer Relationships [Member] | RivieraWaves [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		4 years 182 days
Total intangible assets, Gross Carrying Amount		$ 272	272
Total intangible assets, Accumulated Amortization		272	272
Intangible assets, net
Customer Relationships [Member] | Acquisition of Hillcrest Labs [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		4 years 146 days
Total intangible assets, Gross Carrying Amount		$ 3,518
Total intangible assets, Accumulated Amortization		176
Intangible assets, net		$ 3,342
Customer Backlog [Member] | RivieraWaves [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		1 year 182 days
Total intangible assets, Gross Carrying Amount		$ 93	93
Total intangible assets, Accumulated Amortization		93	93
Intangible assets, net
Customer Backlog [Member] | Acquisition of Hillcrest Labs [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		182 days
Total intangible assets, Gross Carrying Amount		$ 72
Total intangible assets, Accumulated Amortization		29
Intangible assets, net		$ 43
Core Technologies [Member] | Immervision [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		6 years 146 days
Total intangible assets, Gross Carrying Amount		$ 10,000
Total intangible assets, Accumulated Amortization		274
Intangible assets, net		$ 9,726
Core Technologies [Member] | RivieraWaves [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		5 years 36 days
Total intangible assets, Gross Carrying Amount		$ 5,796	5,796
Total intangible assets, Accumulated Amortization		5,586	4,955
Intangible assets, net		$ 210	841
Core Technologies [Member] | Acquisition of Hillcrest Labs [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		7 years 182 days
Total intangible assets, Gross Carrying Amount		$ 2,475
Total intangible assets, Accumulated Amortization		67
Intangible assets, net		$ 2,408
NB-IoT technologies [Member]
Total intangible assets, Weighted Average Amortization Period (Year)	[1]	7 years
Total intangible assets, Gross Carrying Amount	[1]	$ 2,200	2,200
Total intangible assets, Accumulated Amortization	[1]	576	341
Intangible assets, net	[1]	$ 1,624	$ 1,859

[1] During the first quarter of 2018, the Company entered into an agreement to acquire certain NB-IoT technologies in the amount of $2,800, of which technologies valued at $600 has not been received. Of the $2,200, $610 has not resulted in cash outflows as of September 30, 2019. The Company recorded the amortization cost of the NB-IoT technologies in "cost of revenues" on the Company's interim condensed consolidated statements of income (loss).