Derivative Instruments (Details 1) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011 Currency forward contracts [Member] Foreign currency loss [Member]	Oct. 03, 2010 Currency forward contracts [Member] Foreign currency loss [Member]	Oct. 02, 2011 Currency forward contracts [Member] Foreign currency loss [Member]	Oct. 03, 2010 Currency forward contracts [Member] Foreign currency loss [Member]	Oct. 02, 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]	Oct. 02, 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									$ 13,000	$ 83,000
Liability Derivatives, Fair Value											370,000	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					(171,000)	(88,000)	(43,000)	185,000
Derivative Instruments (Textual) [Abstract]
Net foreign currency gain (loss)	$ (231,000)	$ 102,000	$ (80,000)	$ (71,000)