Reorganization and Reorganization Costs System Optimization Costs (Details) - USD ($) $ in Thousands	3 Months Ended							12 Months Ended
	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Restructuring Cost and Reserve
Reorganization and realignment costs	$ 1,806	$ 2,888	$ 17,699	$ 2,217	$ 2,129	$ 2,487	$ 3,250	$ 22,574	$ 10,083	$ 21,910
System Optimization
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost								911	7,791	5,184
Restructuring and Related Cost, Cost Incurred to Date	41,498							41,498
Reorganization and realignment costs								911	9,391	11,568
Restructuring Charges, Incurred to Date	71,909							71,909
Employee Severance | System Optimization
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost								3	82	894
Restructuring and Related Cost, Cost Incurred to Date	18,237							18,237
Professional Fees | System Optimization
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost								838	7,437	3,360
Restructuring and Related Cost, Cost Incurred to Date	17,448							17,448
Other Restructuring | System Optimization
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost								70	272	930
Restructuring and Related Cost, Cost Incurred to Date	5,813							5,813
Accelerated Depreciation and Amortization | System Optimization
Restructuring Cost and Reserve
Reorganization and realignment costs								0	1,600	6,384
Restructuring Charges, Incurred to Date	25,398							25,398
Share Based Compensation Expense | System Optimization
Restructuring Cost and Reserve
Reorganization and realignment costs								0	$ 0	$ 0
Restructuring Charges, Incurred to Date	$ 5,013							$ 5,013