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Selected Quarterly Information (Unaudited) (Tables)
 12 Months Ended
Dec. 30, 2017
Quarterly Financial Information Disclosure [Abstract]  
Schedule of quarterly financial information
    52-Weeks Ended December 30, 2017  
    Quarter Ending  
    April 1     July 1     September 30     December 30  
                         
Net sales   $ 638,546     $ 816,885     $ 743,077     $ 888,496  
Gross profit     372,123       477,858       433,665       499,518  
Net income     237,812       170,950       147,413       138,780  
Basic net income per share   $ 1.26     $ 0.91     $ 0.79     $ 0.74  
Diluted net income per share   $ 1.26     $ 0.91     $ 0.78     $ 0.73  

 

    53-Weeks Ended December 31, 2016  
    Quarter Ending  
    March 26     June 25     September 24     December 31  
                         
Net sales   $ 624,040     $ 811,609     $ 722,250     $ 860,767  
Gross profit     339,850       462,958       405,980       470,782  
Net income     88,092       161,064       125,054       136,605  
Basic net income per share   $ 0.46     $ 0.85     $ 0.66     $ 0.73  
Diluted net income per share   $ 0.46     $ 0.85     $ 0.66     $ 0.72