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Stock Based Compensation (Tables)
9 Months Ended
Oct. 02, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] 
Stock-based compensation expense
                                 
    Three Months Ended     Nine Months Ended  

Stock-Based Compensation Expense Included In:

  October 2, 2011     October 3, 2010     October 2, 2011     October 3, 2010  
    (In thousands)  

Cost of revenues

  $ 1,460     $ 1,822     $ 5,324     $ 5,223  

Research and development

    5,410       6,047       18,286       18,817  

Selling, general and administrative

    4,883       6,135       15,462       18,261  
   

 

 

   

 

 

   

 

 

   

 

 

 

Total stock-based compensation expense

  $ 11,753     $ 14,004     $ 39,072     $ 42,301  
   

 

 

   

 

 

   

 

 

   

 

 

 
Weighted average assumptions in fair value of option grant
                                 
    Three Months Ended     Nine Months Ended  
    October 2, 2011     October 3, 2010     October 2, 2011     October 3, 2010  

Estimated grant date fair value per share

  $ 2.37     $ 1.60     $ 2.14     $ 1.95  

Expected life (years)

    4.48       4.48       4.51       4.29  

Risk-free interest rate

    1     1     2     2

Volatility

    50     49     47     51
                 
    Three Months Ended  
    July 3, 2011     July 4, 2010  

Estimated grant date fair value per share

  $ 2.10     $ 1.74  

Expected life (years)

    0.8       0.8  

Risk-free interest rate

    0.02     0.3

Volatility

    37     48
Changes in stock options outstanding
                 
    Number of
Shares
    Weighted-Average
Exercise
Price Per Share
 
    (In thousands)        

Options outstanding at December 31, 2010

    71,224     $ 6.98  

Options granted

    8,954       6.36  

Options exercised

    (6,736     5.04  

Options canceled

    (6,405     15.32  
   

 

 

   

 

 

 

Options outstanding at October 2, 2011

    67,037     $ 6.29  
   

 

 

   

 

 

 

Options exercisable at October 2, 2011

    43,449     $ 6.97  
   

 

 

   

 

 

 
Unvested service-based restricted stock
         
    Service-Based
Restricted Stock  Units
 
    (In thousands)  

Unvested service-based restricted stock units at December 31, 2010

    7,027  

Granted

    7,493  

Vested

    (1,907

Forfeited

    (680
   

 

 

 

Unvested service-based restricted stock units at October 2, 2011

    11,933  
   

 

 

 
Unvested performance-based restricted stock
         
    Performance-Based
Restricted  Stock Units
 
    (In thousands)  

Unvested performance-based restricted stock units at December 31, 2010

    2,313  

Granted

    3,516  

Vested

    (815

Forfeited

    (224
   

 

 

 

Unvested performance-based restricted stock units at October 2, 2011

    4,790