Restructuring Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		13 Months Ended	19 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 01, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 317	$ 6,818	$ 8,316	$ 15,780
March 2015 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	300	1,400	6,300	10,300		$ 19,600
September 2015 Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	$ 0	2,000	$ 5,500	$ 8,000
Maximum | March 2015 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and elated cost, expected cost	21,000		21,000		21,000	21,000
Maximum | Severance and related | September 2015 Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring and elated cost, expected cost	$ 9,000		$ 9,000		$ 9,000	$ 9,000