Restructuring Activities - Restructuring Plan Reserve Recorded in Accrued Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Sep. 26, 2021
Restructuring Reserve
Balance, beginning of period	$ 823	$ 3,330	$ 2,995	$ 23,920
Restructuring expense (benefit)	3	615	(389)	1,167
Utilized – cash	(240)	(1,594)	(2,004)	(22,730)
Utilized – non cash	0	27	0	278
Foreign currency changes	(9)	(28)	(25)	(285)
Balance, end of period	577	2,350	577	2,350
Employee Termination Benefits
Restructuring Reserve
Balance, beginning of period	79	1,246	121	7,724
Restructuring expense (benefit)	0	(165)	0	(1,131)
Utilized – cash	(19)	(397)	(55)	(5,743)
Utilized – non cash	0	0	0	0
Foreign currency changes	(4)	(7)	(10)	(173)
Balance, end of period	56	677	56	677
Contract Terminations & Other
Restructuring Reserve
Balance, beginning of period	744	2,084	2,874	16,196
Restructuring expense (benefit)	3	807	(389)	2,576
Utilized – cash	(221)	(1,197)	(1,949)	(16,987)
Utilized – non cash	0	0	0	0
Foreign currency changes	(5)	(21)	(15)	(112)
Balance, end of period	521	1,673	521	1,673
Non-Current Asset Adjustments
Restructuring Reserve
Balance, beginning of period	0	0	0	0
Restructuring expense (benefit)	0	(27)	0	(278)
Utilized – cash	0	0	0	0
Utilized – non cash	0	27	0	278
Foreign currency changes	0	0	0	0
Balance, end of period	$ 0	$ 0	$ 0	$ 0