Derivatives and Hedging Activities (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Effect of nondesignated derivative contracts
Gain (loss) on foreign exchange contracts including forward point income	$ (2,376)	$ (11,696)	$ 2,586	$ (2,036)
Gain (loss) from revaluation of foreign currency exposures hedged by foreign exchange contracts	$ 2,242	$ 12,900	$ (1,969)	$ 2,070