Amortization Expense of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 28, 2014	Mar. 29, 2013
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization	$ 3,045	$ 3,487
Cost of Sales
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization	1,301	1,251
Operating Expense
Finite Lived Intangible Assets Amortization Expense [Line Items]
Amortization	$ 1,744	$ 2,236