CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 65,886	$ 56,571	$ 126,079	$ 117,659
Other comprehensive income (loss):
Foreign currency translation adjustments	(3,577)	1,676	(3,545)	(2,326)
Comprehensive income	$ 62,309	$ 58,247	$ 122,534	$ 115,333