v2.4.0.6
Stock-based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
Share-based Compensation [Abstract]      
Options, Granted 0    
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP 1,000,000    
Total intrinsic value of options exercised $ 1.6 $ 5.9 $ 15.4
Weighted average period in which compensation costs are expected to be recognized, in years 2 years 10 months 21 days    
Total unrecognized compensation costs related to unvested stock options, before income taxes 8.9    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value $ 4.6 $ 6.4 $ 6.8
Stock Issued During Period, Shares, Restricted Stock Award, Gross 6,369    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 3,183    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period 0    
Restricted Stock Units vested or expected to vest 3,186    
TwoThousandFourNonEmployeeDirectorsStockOptionPlan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common Stock, Capital Shares Reserved for Future Issuance 5,957,751    
Two Thousand Four Equity Incentive Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common Stock, Capital Shares Reserved for Future Issuance 438,026