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Summary of Significant Accounting Policies (Details 5) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Summary of Significant Accounting Policies [Line Items]    
Deferred license fees $ 75 $ 1,248
Deferred License Fees [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred license fees 1,089
Deferred Airbar Revenues [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred license fees 59 137
Deferred Sensor Modules Revenues [Member]    
Summary of Significant Accounting Policies [Line Items]    
Deferred license fees $ 16 $ 22