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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation Expense

Stock-based compensation expense, net for the three and nine months ended September 30 was as follows (in thousands):

 

     Three Months Ended      Nine Months Ended  
     September 30,      September 30,  
     2016      2015      2016      2015  

Cost of revenues

   $ (47    $ 51      $ 59      $ 170  

Selling, general and administrative

     (327      215        148        975  

Research and development

     (124      75        (36      247  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total stock-based compensation

   $ (498    $ 341      $ 171      $ 1,392