Strategic Technology Transactions, Goodwill and Other Purchased Intangible Assets - Purchased Intangible Assets, Subject to Amortization (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 51,963	$ 33,263
Accumulated Amortization	17,743	16,572
Rasco technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,418	32,399
Accumulated Amortization	16,936	16,452
Ismeca technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,681
Accumulated Amortization	615
Duma technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	864	864
Accumulated Amortization	$ 192	$ 120