Equity Incentive Plan And Stock-Based Compensation (Schedule Of Activities And Related Information For Options) (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended
Jul. 01, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding stock options as of December 25, 2011 4,295,794
Granted 2,629,900
Canceled/Forfeited (157,177)
Exercised (107,506)
Outstanding stock options as of July 1, 2012 6,661,011
Total vested and exercisable as of July 1, 2012 2,119,287
Stock Option [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Beginning balance 14.97
Granted 9.96
Canceled/Forfeited 14.38
Exercised 10.51
Ending balance 13.08
Total vested and exercisable as of July 1, 2012 14.22
Beginning balance 5 years 7 months 24 days
Granted   
Canceled/Forfeited   
Exercised   
Ending balance 5 years 9 months 26 days
Total vested and exercisable as of July 1, 2012 5 years 2 months 9 days
Granted   
Canceled/Forfeited   
Exercised   
Ending balance 3,921
Total vested and exercisable as of July 1, 2012 564