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Note 7 - Intangible Assets, Net - Schedule of Finite-lived Intangible Assets (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Total intangible assets, Gross Carrying Amount $ 8,361 $ 8,361
Total intangible assets, Accumulated Amortization 6,239 5,661
Intangible assets, net $ 2,122 2,700
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 272 272
Intangible assets, net
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
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 5,375 4,955
Intangible assets, net $ 421 841
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] 499 341
Intangible assets, net [1] $ 1,701 $ 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 $600 has not been received. Of the $2,200, $750 has not resulted in cash outflows as of June 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 loss.