Other Comprehensive Income Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Net earnings	$ 72,891	$ 54,267	$ 127,429	$ 92,498
Currency Translation Adjustment	(19,579)	6,669	(19,975)	(9,122)
Pension liability adjustment, net of tax	1,078	(89)	(4,856)	25
Unrealized gain on interest rate swaps, net of tax	(2)	302	(123)	(170)
Comprehensive income	$ 54,388	$ 61,149	$ 112,187	$ 83,231