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Income Taxes (Details Textual 1) (Stock Options [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Credit to additional paid in capital for the tax benefit resulting from the exercise of stock options $ 8.4 $ 7.2 $ 1.5