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Deferred Compensation Plan - Additional Information (Detail) (USD $)
 3 Months Ended 9 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Sep. 27, 2013
Sep. 28, 2012
Dec. 28, 2012
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]          
Deferred compensation plan invested amounts $ 35,499,000   $ 35,499,000   $ 27,089,000
Deferred compensation plan vested amounts due 35,431,000   35,431,000   26,984,000
Change in market value of trust assets $ 1,893,000 $ 1,094,000 $ 4,128,000 $ 2,027,000  
Maximum
          
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]          
Percentage of compensation deferred     100.00%