Balance Sheet Information-OCI (Details 7) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014
Accumulated net unrealized gain (loss) on:
Available-for-sale investments	$ 1,202		$ 1,202		$ 3,359
Foreign currency translation	(225,136)		(225,136)		(197,252)
Cash flow hedging activities	356		356		(14,179)
Total accumulated other comprehensive loss	(223,578)		(223,578)		$ (208,072)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Available-for-sale investments	(2,416)	$ 1,221	(1,317)	$ 1,598
Foreign currency translation	2,471	2,201	4,250	5,972
Total income tax expense allocated	$ 55	$ 3,422	$ 2,933	$ 7,570