Reorganization and Realignment Costs G&A Realignment - May 2017 Plan (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Restructuring Cost and Reserve
Restructuring Charges	$ 2,626	$ 181
G&A Realignment – May 2017 Plan
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost	2,535
Restructuring and Related Cost, Cost Incurred to Date	19,071
Restructuring Charges	2,626	$ 0
Restructuring Charges, Incurred to Date	24,289
G&A Realignment – May 2017 Plan | Severance and related employee costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost Remaining	1,000
Restructuring and Related Cost, Incurred Cost	2,059
Restructuring and Related Cost, Cost Incurred to Date	17,015
G&A Realignment – May 2017 Plan | Recruitment and relocation costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost Remaining	3,000
Restructuring and Related Cost, Incurred Cost	148
Restructuring and Related Cost, Cost Incurred to Date	637
G&A Realignment – May 2017 Plan | Third-party and other costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost Remaining	1,000
Restructuring and Related Cost, Incurred Cost	328
Restructuring and Related Cost, Cost Incurred to Date	1,419
G&A Realignment – May 2017 Plan | Share based compensation
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost Remaining	2,000
Restructuring Charges	91
Restructuring Charges, Incurred to Date	5,218
G&A Realignment – May 2017 Plan | Minimum
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	28,000
Restructuring and Related Cost, Expected Cost Remaining	3,000
G&A Realignment – May 2017 Plan | Maximum
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	33,000
Restructuring and Related Cost, Expected Cost Remaining	$ 8,000