Restructuring Activities - Restructuring Plan Reserve Recorded in Accrued Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Restructuring Reserve
Balance, beginning of period	$ 2,995	$ 23,920
Restructuring (benefit) expense	(128)	(366)
Utilized – cash	(1,632)	(16,442)
Utilized – non cash		528
Foreign currency changes	(2)	(166)
Balance, end of period	1,233	7,474
Employee Termination Benefits
Restructuring Reserve
Balance, beginning of period	121	7,724
Restructuring (benefit) expense	0	(944)
Utilized – cash	(18)	(3,661)
Utilized – non cash		0
Foreign currency changes	(3)	(112)
Balance, end of period	100	3,007
Contract Terminations & Other
Restructuring Reserve
Balance, beginning of period	2,874	16,196
Restructuring (benefit) expense	(128)	1,106
Utilized – cash	(1,614)	(12,781)
Utilized – non cash		0
Foreign currency changes	1	(54)
Balance, end of period	1,133	4,467
Non-Current Asset Adjustments
Restructuring Reserve
Balance, beginning of period	0	0
Restructuring (benefit) expense	0	(528)
Utilized – cash	0	0
Utilized – non cash		528
Foreign currency changes	0	0
Balance, end of period	$ 0	$ 0