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Note 6 - Intangible Assets, Net - Schedule of Finite-lived Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Total intangible assets, Gross Carrying Amount $ 8,361 $ 6,161
Total intangible assets, Accumulated Amortization 5,661 4,419
Intangible assets, net (Note 6) $ 2,700 1,742
Customer Relationships [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 272 211
Intangible assets, net (Note 6) 61
Customer Backlog [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 6)
Core Technologies [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 4,955 4,115
Intangible assets, net (Note 6) $ 841 1,681
NB-IoT technologies [Member]    
Total intangible assets, Weighted Average Amortization Period (Year) 7 years  
Total intangible assets, Gross Carrying Amount $ 2,200
Total intangible assets, Accumulated Amortization 341
Intangible assets, net (Note 6) $ 1,859