Reorganization and Realignment Costs Operations and Field Realignment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Restructuring Cost and Reserve
Reorganization and realignment costs	$ 345	$ 3,375	$ 7,381	$ 10,196
Operations and Field Realignment
Restructuring Cost and Reserve
Reorganization and realignment costs	74	3,021	1,563	3,021
Restructuring and Related Cost, Expected Cost Remaining	500		500
Restructuring and Related Cost, Incurred Cost	74	2,502	1,563	2,502
Restructuring and Related Cost, Cost Incurred to Date	4,743		4,743
Restructuring Charges, Incurred to Date	5,364		5,364
Operations and Field Realignment | Minimum
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	5,500		5,500
Operations and Field Realignment | Maximum
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	6,000		6,000
Operations and Field Realignment | Severance and related employee costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	0	2,502	333	2,502
Restructuring and Related Cost, Cost Incurred to Date	3,446		3,446
Operations and Field Realignment | Third-party and other costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	74	0	1,230	0
Restructuring and Related Cost, Cost Incurred to Date	1,297		1,297
Operations and Field Realignment | Share-based compensation
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	0	$ 519	0	$ 519
Restructuring and Related Cost, Cost Incurred to Date	$ 621		$ 621