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Reconciliation of Basic and Diluted Shares (Details 1)
In Thousands
3 Months Ended9 Months Ended
Oct. 02, 2011
Oct. 03, 2010
Oct. 02, 2011
Oct. 03, 2010
Stock options [Member]
    
Weighted-average common share equivalents excluded from the computation of diluted shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount39,92475,23442,97870,893
Restricted stock unit awards [Member]
    
Weighted-average common share equivalents excluded from the computation of diluted shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount1,4917,404182422
Convertible notes [Member]
    
Weighted-average common share equivalents excluded from the computation of diluted shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   12,946