Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Summary of Amortization Expense for Acquired Intangibles (Detail)

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Intangible Assets - Summary of Amortization Expense for Acquired Intangibles (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Goodwill And Intangible Assets Disclosure [Abstract]        
Amortization Expense $ 1,494 $ 1,013 $ 2,429 $ 1,667