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Stock-Based Compensation (Tables)
 9 Months Ended
Jan. 01, 2012
Stock-Based Compensation [Abstract]  
Summary of Stock-Based Compensation Expense
                                 
    Three Months Ended     Nine Months Ended  
    January 1,
2012		     December 26,
2010		     January 1,
2012		     December 26,
2010		  
    (In thousands)  

Cost of revenues

   $ 632     $ 599     $ 2,075     $ 1,962  

Engineering and development

     3,553       3,714       11,776       12,692  

Sales and marketing

     1,924       1,824       5,625       5,866  

General and administrative

     1,991       2,382       6,311       6,591  
   

 

 

    

 

 

    

 

 

    

 

 

  
    $ 8,100     $ 8,519     $ 25,787     $ 27,111