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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 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 six months ended June 30 was as follows (in thousands):

 

     Three Months Ended
June  30,
     Six Months Ended
June 30,
 
     2013      2012      2013      2012  

Cost of revenues

   $ 40      $ 13      $ 44      $ 26  

Selling, general and administrative

     998        247        1,181        474  

Research and development

     101        92        177        170  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total stock-based compensation

   $ 1,139      $ 352      $ 1,402      $ 670