Reorganization and Realignment Costs System Optimization Accrual Rollforward (Details) - System Optimization [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Restructuring Reserve [Roll Forward]
Beginning balance			$ 875	$ 2,804
Charges	$ 2,091	$ 804	5,295	1,539
Payments			(6,065)	(4,014)
Ending balance	105	329	105	329
Severance and related employee costs [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			77	2,235
Charges	28	225	46	854
Payments			(123)	(3,003)
Ending balance	0	86	0	86
Professional fees [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			708	146
Charges	1,991	242	5,137	393
Payments			(5,740)	(488)
Ending balance	105	51	105	51
Other [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			90	423
Charges	72	337	112	292
Payments			(202)	(523)
Ending balance	$ 0	$ 192	$ 0	$ 192