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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2013
Stock-Based Compensation  
Schedule of stock-based compensation expense

 

 

 

 

For the Three Months

 

For the Nine Months

 

 

 

Ended September 30,

 

Ended September 30,

 

 

 

2013

 

2012

 

2013

 

2012

 

 

 

(In thousands)

 

Research and development expenses

 

$

798

 

$

697

 

$

2,647

 

$

2,564

 

Selling, general and administrative expenses

 

3,138

 

3,051

 

11,341

 

11,797

 

Total stock-based compensation

 

$

3,936

 

$

3,748

 

$

13,988

 

$

14,361