Goodwill and Identified Intangible Assets - Amortization Expense for Identifiable Purchased Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 6,764	$ 7,227	$ 20,569	$ 22,004
Product cost of revenue [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense	4,763	5,048	14,470	15,456
Operating Expenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 2,001	$ 2,179	$ 6,099	$ 6,548