Reorganization and Realignment Costs IT Realignment Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Restructuring Cost and Reserve
Reorganization and realignment costs	$ 2,102	$ 2,911	$ 7,036	$ 6,821
IT Realignment
Restructuring Cost and Reserve
Reorganization and realignment costs	6	2,847	6	6,406
Restructuring and Related Cost, Incurred Cost	6	2,847	6	6,406
Restructuring and Related Cost, Cost Incurred to Date	16,228		16,228
Restructuring Charges, Incurred to Date	16,421		16,421
IT Realignment | Severance and related employee costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	(8)	830	(119)	975
Restructuring and Related Cost, Cost Incurred to Date	8,272		8,272
IT Realignment | Recruitment and relocation costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	13	143	121	314
Restructuring and Related Cost, Cost Incurred to Date	1,417		1,417
IT Realignment | Third-party and other costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	1	1,874	4	5,117
Restructuring and Related Cost, Cost Incurred to Date	6,539		6,539
IT Realignment | Share-based compensation
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	0	$ 0	0	$ 0
Restructuring and Related Cost, Cost Incurred to Date	$ 193		$ 193