v2.4.0.6
Stock-based Compensation (Weighted-Average Assumptions For Valuation Of Stock Options Granted) (Details) (USD $)
12 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
Share-based Compensation [Abstract]      
Expected term 4 years 3 months 18 days 4 years 4 years
Expected volatility 58.90% 58.50% 57.90%
Expected dividend yield 0.00% 0.00%  
Risk-free interest rate 0.70% 0.90% 1.20%
Estimated weighted-average fair value per stock option granted $ 15.45 $ 20.54 $ 21.60