Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Net income	$ 40,198	$ 29,594	$ 100,339	$ 85,796
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	16,407	20,446	1,703	3,868
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	40	19	10	41
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	299	299	897	897
Other Comprehensive Income (Loss), Net of Tax	16,746	20,764	2,610	4,806
Comprehensive Income, Net of Tax, Attributable to Parent	$ 56,944	$ 50,358	$ 102,949	$ 90,602