Reorganization and Realignment Costs Summary (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
Operations and Field Realignment
Restructuring Cost and Reserve
Reorganization and realignment costs						3,801	0	0
IT Realignment
Restructuring Cost and Reserve
Reorganization and realignment costs						7,288	9,127	0
G&A Realignment
Restructuring Cost and Reserve
Reorganization and realignment costs						614	7,749	8,785
System Optimization
Restructuring Cost and Reserve
Reorganization and realignment costs						$ 4,327	$ 89	$ 283