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Derivative Instruments - Financial Information Related to Cash Flow Hedges of Future Revenues (Detail) (Cash Flow Hedging [Member]) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013 USD ($)	Mar. 31, 2012 USD ($)	Mar. 30, 2013 EUR (€)	Dec. 31, 2012 EUR (€)
Derivative [Line Items]
Notional balance of outstanding contracts versus the dollar			€ 84,845	€ 88,680
Hedge effectiveness			100.00%	100.00%
Net gains and (losses) included in revenue	$ (1,046)	$ 1,157

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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