Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 17,042	$ 28,637	$ 55,175	$ 103,817
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax of $0	(36,633)	(10,277)	(38,600)	(47,779)
Interest rate hedge adjustments, net of tax benefit of ($4,604), ($51), ($4,831), and ($402), respectively	5,050	574	6,163	1,966
Defined benefit pension plans, net of tax expense of $851, $822, $2,420, and $2,841, respectively	1,373	1,503	4,255	5,484
Total other comprehensive income (loss), net of tax	(30,210)	(8,200)	(28,182)	(40,329)
Comprehensive income (loss)	$ (13,168)	$ 20,437	$ 26,993	$ 63,488