Reorganization and Realignment Costs IT Realignment Costs (Details) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Jan. 03, 2021	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 29, 2019	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Restructuring Cost and Reserve
Reorganization and realignment costs	$ 5,834	$ 3,375	$ 2,911	$ 3,910	$ 12,194	$ 16,030	$ 16,965	$ 9,068
IT Realignment
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost						7,288	8,934
Restructuring and Related Cost, Cost Incurred to Date	16,222					16,222
Reorganization and realignment costs						7,288	9,127	$ 0
Restructuring Charges, Incurred to Date	16,415					16,415
IT Realignment | Severance and related employee costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost						843	7,548
Restructuring and Related Cost, Cost Incurred to Date	8,391					8,391
IT Realignment | Recruitment and relocation costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost						1,296	0
Restructuring and Related Cost, Cost Incurred to Date	1,296					1,296
IT Realignment | Third-party and other costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost						5,149	1,386
Restructuring and Related Cost, Cost Incurred to Date	6,535					6,535
IT Realignment | Share-based compensation
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost						0	$ 193
Restructuring and Related Cost, Cost Incurred to Date	$ 193					$ 193