Reorganization and Realignment Costs Summary (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
Restructuring Cost and Reserve [Line Items]
Reorganization and realignment costs	$ 181	$ 3,250
System Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization and realignment costs	181	2,723
G&A Realignment – November 2014 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Reorganization and realignment costs	$ 0	$ 527