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Deferred Revenues (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2016
USD ($)
Customers
Dec. 31, 2015
USD ($)
Customers
Deferred Revenues (Textual)    
Deferred license fee revenue $ 1,936,000 $ 1,475,000
Prepayments for Future License Fees [Member]    
Deferred Revenues (Textual)    
Deferred license fee revenue $ 1,900,000 $ 1,100,000
Number of customer | Customers 3 2
Deferred Engineering Development Fees [Member]    
Deferred Revenues (Textual)    
Deferred license fee revenue $ 17,000 $ 400,000
Number of customer | Customers 1 1