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Summary of Significant Accounting Policies (Details 5) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Summary of Significant Accounting Policies [Line Items]    
Deferred revenues $ 66 $ 75
Deferred License revenues [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred revenues 28  
Deferred AirBar revenues [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred revenues 10 59
Deferred sensor modules revenues [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred revenues 12 $ 16
Deferred NRE revenues [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred revenues $ 16