Reorganization and Realignment Costs Summary (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014		Sep. 27, 2015	Sep. 28, 2014
Restructuring Cost and Reserve [Line Items]
Reorganization and realignment costs	$ 5,754	$ 1,389	[1]	$ 16,646	$ 17,376	[1]
General and Administrative Realignment and Reinvestment [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization and realignment costs	1,461	0		9,996	0
System Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization and realignment costs	$ 4,293	$ 1,389		$ 6,650	$ 17,376

[1] Previously titled “Facilities action charges (income), net.”