CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 83,248	$ 11,456	$ 158,114	$ 142,606
Other comprehensive income (loss), net of tax:
Foreign currency translation, net of tax of $1,002, $2,295, $404, and $(5,286) for the three and six months periods, respectively	6,080	17,654	(17,995)	(545)
Pension and other postretirement benefit plans adjustment, net of tax of $(390), $(404), $(903), and $(926) for the three and six months periods, respectively	1,298	1,345	2,909	3,034
Derivatives qualifying as hedges, net of tax of $39, $64, $72, and $436 for the three and six months periods, respectively	397	(1,095)	424	(4,912)
Other comprehensive income (loss), net of tax:	7,775	17,904	(14,662)	(2,423)
Comprehensive income	$ 91,023	$ 29,360	$ 143,452	$ 140,183