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Deferred Revenue (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Customers
Dec. 31, 2015
USD ($)
Customers
Deferred Revenue (Textual)    
Deferred license fee revenue $ 1,921 $ 1,475
Prepayments from Future License Fees [Member]    
Deferred Revenue (Textual)    
Deferred license fee revenue $ 1,800 $ 1,100
Number of customer | Customers 4 2
Deferred Engineering Development Fees [Member]    
Deferred Revenue (Textual)    
Deferred license fee revenue $ 400
Number of customer | Customers   1
AirBar sales [Member]    
Deferred Revenue (Textual)    
Deferred license fee revenue $ 100