Reorganization and Realignment Costs G&A Realignment Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2016	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 2,487	$ 6,279	$ 5,737	$ 10,892
General and Administrative Realignment and Reinvestment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	950		950
Restructuring and Related Cost, Incurred Cost	406	1,160	933	3,644
Restructuring Charges	406	4,372	933	8,535
Restructuring and Related Cost, Cost Incurred to Date	17,865		17,865
Restructuring Charges, Incurred to Date	24,201		24,201
General and Administrative Realignment and Reinvestment [Member] | Severance and related employee costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	35	637	11	2,619
Restructuring and Related Cost, Cost Incurred to Date	14,939		14,939
Restructuring Reserve, Accrual Adjustment			(32)
General and Administrative Realignment and Reinvestment [Member] | Recruitment and relocation costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	353	514	893	984
Restructuring and Related Cost, Cost Incurred to Date	2,760		2,760
General and Administrative Realignment and Reinvestment [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	18	9	29	41
Restructuring and Related Cost, Cost Incurred to Date	166		166
General and Administrative Realignment and Reinvestment [Member] | Share based compensation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	$ 3,212	0	$ 4,891
Restructuring Charges, Incurred to Date	$ 6,336		$ 6,336