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Shareholders' Equity (Details 3) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Share-based compensation charges [1] $ 965 $ 1,342
Cost of revenues [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Share-based compensation charges [1] 95 77
Research and development, net [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Share-based compensation charges [1] 357 411
Sales and marketing [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Share-based compensation charges [1] 330 462
General and administrative [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Share-based compensation charges [1] $ 183 $ 392
[1] Including $772 and $827 of compensation cost related to RSUs for the six month periods ended June 30, 2019 and 2018, respectively.