Balance Sheet Information-AOCI (Details 8) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Other Comprehensive Income
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax	$ 314	$ (523)
Cost of Sales [Member]
Other Comprehensive Income
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Cost of Sales, Before Tax	(1,441)	6,314
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	0	0
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	(1,441)	6,314
Other Income [Member]
Other Comprehensive Income
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax	(314)	523
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	(175)	(169)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(489)	354
Net Income [Member]
Other Comprehensive Income
Total reclassifications for the period	$ (1,930)	$ 6,668