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Derivative Instruments - Information Regarding the Effect of the Forward Contracts, Net of the Underlying Exposure, on the Consolidated Statements of Operations (Detail) (Foreign currency gain (loss) [Member], Currency forward contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Foreign currency gain (loss) [Member] \| Currency forward contracts [Member]
Information regarding the effect of the forward contracts, net of the underlying exposure, on the Consolidated Statements of Operations
Amount of Loss Recognized in Income on Derivatives	$ 203	$ 289

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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