Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Statement Of Comprehensive Income [Abstract]
Net unrealized income (loss) on hedging derivatives, net of income taxes	$ 1,900	$ (300)	$ 900	$ (1,600)
Reclassification adjustment for loss on settlement of hedging derivatives included in net income, net of income taxes	1,900	700	3,600	800
Foreign currency translation gain (loss), tax effect	$ 0	0	$ 0	0
Other, tax effect		$ 1,500		$ 1,500