Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Net income	$ 29,993	$ 30,293	$ 56,794	$ 55,960
Other comprehensive income, net of taxes:
Change in cumulative translation adjustment	6,361	(22,361)	(9,353)	(9,617)
Change in unrealized loss on available-for-sale securities	(10)	(9)	(3)	(21)
Change in minimum pension liability	(56)	0	(71)	0
Changes due to cash flow hedging instruments:
Net gain (loss) on hedge instruments	70	(4,495)	(1,855)	(983)
Reclassification to net income of previously deferred losses related to hedge derivatives instruments	304	1,143	626	1,379
Comprehensive income	$ 36,662	$ 4,571	$ 46,138	$ 46,718