CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 11,456	$ 83,375	$ 142,606	$ 124,272
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax of $$2,295, $(298), $(5,286), and $(1,759) for the three and six months periods, respectively	17,654	12,568	(545)	12,332
Pension and other postretirement benefit plans adjustment, net of tax of $(404), $(446), $(926), and $(836) for the three and six months periods, respectively	1,345	1,459	3,034	2,688
Derivatives qualifying as hedges, net of tax of $64, $83, $436, and $82 for the three and six months periods, respectively	(1,095)	755	(4,912)	158
Other comprehensive income (loss), net of tax:	17,904	14,782	(2,423)	15,178
Comprehensive income	$ 29,360	$ 98,157	$ 140,183	$ 139,450