Strategic Technology Transactions, Goodwill and Purchased Intangible Assets - Allocation of Purchase Price (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2012 Ismeca [Member]
Schedule Of Business Acquisitions Purchase Price Allocation [Line Items]
Current assets				$ 38,058
Fixed assets				1,314
Other assets				7,395
Intangible assets				33,138
Goodwill	71,313	58,756	58,060	10,930
Total assets acquired				90,835
Liabilities assumed				(33,692)
Net assets acquired				$ 57,143