Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 26,210	$ 8,172	$ 62,768	$ 43,858
Other Comprehensive (Loss) Income, Foreign Currency Translation Adjustment	(18,585)	4,964	(19,539)	(6,979)
Other Comprehensive (Loss) Income, Cash Flow Hedge	(941)	286	(8,914)	2,565
Other Comprehensive Income (Loss), Pension Liability Adjustment	1,076	(196)	1,814	1,047
Comprehensive Income	$ 7,760	$ 13,226	$ 36,129	$ 40,491