Reorganization and Realignment Costs IT Realignment Accrual Rollforward (Details) - IT Realignment - 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
Beginning balance			$ 1,508	$ 8,624
Charges	$ 6	$ 2,847	6	6,406
Payments			(1,042)	(10,620)
Ending balance	472	4,410	472	4,410
Severance and related employee costs
Restructuring Cost and Reserve
Beginning balance			1,508	7,548
Charges	(8)	830	(119)	975
Payments			(917)	(4,113)
Ending balance	472	4,410	472	4,410
Recruitment and relocation costs
Restructuring Cost and Reserve
Beginning balance			0	0
Charges	13	143	121	314
Payments			(121)	(314)
Ending balance	0	0	0	0
Third-party and other costs
Restructuring Cost and Reserve
Beginning balance			0	1,076
Charges	1	1,874	4	5,117
Payments			(4)	(6,193)
Ending balance	0	0	0	0
Accrued expenses and other current liabilities
Restructuring Cost and Reserve
Ending balance	462	4,039	462	4,039
Other Liabilities
Restructuring Cost and Reserve
Ending balance	$ 10	$ 371	$ 10	$ 371