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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock-Based Compensation Expense
value of stock option awards as of their grant date. Stock-based compensation expense for the three and nine months ended September 30 was as follows (in thousands):

 

     Three Months Ended
September 30,
     Nine Months Ended
September 30,
 
     2013      2012      2013      2012  

Cost of revenues

   $ 59      $ 10      $ 103      $ 36  

Selling, general and administrative

     348        205        1,529        679  

Research and development

     84        85        261        255  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total stock-based compensation

   $ 491      $ 300      $ 1,893      $ 970