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Chief Executive Officer Succession and Transition Plan - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Selling General And Administrative Expenses [Line Items]        
Selling General And Administrative Expense $ 39,095 $ 33,533 $ 110,132 $ 108,449
Chief Executive Officer Employment Agreements
       
Selling General And Administrative Expenses [Line Items]        
Selling General And Administrative Expense     $ 3,900