Provision For Restructuring (Schedule Of Restructuring Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Restructuring Cost and Reserve [Line Items]
Asset impairments			$ 0	$ 172
Total	$ 284	$ 341	1,588	2,233
Profit Enhancement Plan
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related charges	170	0	1,516	0
Other exit costs	116	0	163	0
Total			1,700
Global Restructuring Plan (including LEAN)
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related charges	(13)	272	(102)	1,844
Asset impairments	0	0	0	172
Other exit costs	11	99		242
Total			(100)
SG&A Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related charges	$ 0	$ (30)	0	$ (25)
Other exit costs | Profit Enhancement Plan
Restructuring Cost and Reserve [Line Items]
Total			200
Other exit costs | Global Restructuring Plan (including LEAN)
Restructuring Cost and Reserve [Line Items]
Total			$ 11