Goodwill and Identified Intangible Assets - Amortization Expense for Identifiable Purchased Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 6,772	$ 7,238	$ 13,805	$ 14,777
Product cost of revenue [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense	4,762	5,048	9,707	10,408
Operating Expenses [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 2,010	$ 2,190	$ 4,098	$ 4,369