Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

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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- Definition

Aggregate impact of foreign currency derivatives on earnings for the period. Includes impact of foreign currency cash flow hedge ineffectiveness and the ineffectiveness of fair value hedging derivatives and full change in fair value of the foreign currency derivatives not designated as hedging instruments.

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Derivative Instruments (Details 1) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
Derivative Instruments (Details 1) (USD $)	Jul. 03, 2011	Jul. 04, 2010	Jul. 03, 2011	Jul. 04, 2010	Jul. 03, 2011 Currency forward contracts [Member] Foreign currency gain (loss) [Member]	Jul. 04, 2010 Currency forward contracts [Member] Foreign currency gain (loss) [Member]	Jul. 03, 2011 Currency forward contracts [Member] Foreign currency gain (loss) [Member]	Jul. 04, 2010 Currency forward contracts [Member] Foreign currency gain (loss) [Member]	Jul. 03, 2011 Currency forward contracts [Member] Prepaid expenses and other current assets [Member]	Dec. 31, 2010 Currency forward contracts [Member] Prepaid expenses and other current assets [Member]	Jul. 03, 2011 Currency forward contracts [Member] Accrued expenses [Member]	Dec. 31, 2010 Currency forward contracts [Member] Accrued expenses [Member]
Information regarding the fair value of the forward contracts outstanding
Asset Derivatives, Fair Value									$ 209,000	$ 83,000
Liability Derivatives, Fair Value											13,000	125,000
Information regarding the effect of the forward contracts, net of the underlying exposure, on the Consolidated Statements of Operations
Amount of gain (loss) recognized in income on derivatives					126,000	(206,000)	128,000	(274,000)
Derivative Instruments (Textuals) [Abstract]
Net foreign currency gain (loss)	$ 210,000	$ (8,000)	$ 151,000	$ (173,000)