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Stock-Based Compensation
3 Months Ended
Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation

Note 7 — Stock-Based Compensation

Total stock-based compensation expense was recognized in our Condensed Consolidated Statements of Operations as follows (in thousands):

 

     Three months ended
March 31,
 
     2015      2014  

Cost of goods sold

   $ 324       $ 319   

Research and development expense

     2,422         1,973   

General and administrative expense

     2,431         2,069   
  

 

 

    

 

 

 

Total stock-based compensation

$ 5,177    $ 4,361   
  

 

 

    

 

 

 

During the three months ended March 31, 2015 and 2014, we granted 410,810 and 3,133,180 stock options, respectively, at a weighted-average grant-date fair value of $6.56 per share and $5.97 per share, respectively. As a result of stock issuances under our equity compensation plans, during the three months ended March 31, 2015 and 2014, we issued 235,298 and 667,374 common shares, respectively.