Reorganization and Realignment Costs Operations and Field Realignment (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
Operations and Field Realignment
Restructuring Cost and Reserve
Reorganization and realignment costs	1,215	$ 0	1,489	$ 0
Restructuring and Related Cost, Incurred Cost	1,215		1,489
Restructuring and Related Cost, Cost Incurred to Date	4,669		4,669
Restructuring Charges, Incurred to Date	5,290		5,290
Operations and Field Realignment | Minimum
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	6,000		6,000
Restructuring and Related Cost, Expected Cost Remaining	1,000		1,000
Operations and Field Realignment | Maximum
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	8,000		8,000
Restructuring and Related Cost, Expected Cost Remaining	3,000		3,000
Operations and Field Realignment | Severance and related employee costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	79		333
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	1,136		1,156
Restructuring and Related Cost, Cost Incurred to Date	1,223		1,223
Operations and Field Realignment | Share-based compensation
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	0		0
Restructuring and Related Cost, Cost Incurred to Date	$ 621		$ 621