Reorganization and Realignment Costs G&A Realignment Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 2,129	$ 5,754	$ 7,866	$ 16,646
General and Administrative Realignment and Reinvestment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	350		350
Restructuring and Related Cost, Incurred Cost	38	785	971	4,429
Restructuring Charges	38	1,461	971	9,996
Restructuring and Related Cost, Cost Incurred to Date	17,903		17,903
Restructuring Charges, Incurred to Date	24,239		24,239
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	0	513	11	3,132
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	29	270	922	1,254
Restructuring and Related Cost, Cost Incurred to Date	2,789		2,789
General and Administrative Realignment and Reinvestment [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	9	2	38	43
Restructuring and Related Cost, Cost Incurred to Date	175		175
General and Administrative Realignment and Reinvestment [Member] | Share based compensation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	$ 676	0	$ 5,567
Restructuring Charges, Incurred to Date	$ 6,336		$ 6,336