Note 7 - Goodwill and Intangible Assets, Net - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Total intangible assets, Gross Carrying Amount		$ 21,250	$ 8,361
Total intangible assets, Accumulated Amortization		7,826	5,661
Intangible assets, net (Note 7)		$ 13,424	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 (Note 7)
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		395
Intangible assets, net (Note 7)		$ 3,123
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 (Note 7)
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		65
Intangible assets, net (Note 7)		$ 7
Core Technologies [Member] | Immervision [Member]
Total intangible assets, Weighted Average Amortization Period (Year)		6 years 146 days
Total intangible assets, Gross Carrying Amount		$ 7,063
Total intangible assets, Accumulated Amortization		472
Intangible assets, net (Note 7)		$ 6,591
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		5,796	4,955
Intangible assets, net (Note 7)			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		150
Intangible assets, net (Note 7)		$ 2,325
NB-IoT technologies [Member]
Total intangible assets, Weighted Average Amortization Period (Year)	[1]	7 years
Total intangible assets, Gross Carrying Amount	[1]	$ 1,961	2,200
Total intangible assets, Accumulated Amortization	[1]	583	341
Intangible assets, net (Note 7)	[1]	$ 1,378	$ 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, $210 has not resulted in cash outflows as of December 31, 2019. In addition, the Company participated in programs sponsored by the Hong Kong government for the support of the above acquisition, and as a result, the Company received during 2019 an amount of $239 related to the NB-IoT technologies, which was reduced from the gross carrying amount of intangible assets. 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).