Provision For Restructuring (Schedule Of Restructuring Expense) (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]
Asset impairments			$ 0	$ 172
Total	$ (5)	$ 459	1,583	2,692
Profit Enhancement Plan
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related charges	14	925	1,530	925
Other exit costs	28	9	191	9
Total			1,700
Global Restructuring Plan (including LEAN)
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related charges	(50)	(485)	(152)	1,359
Other exit costs	4	10	15	252
Asset impairments	0	0	0	172
Total			(100)
SG&A Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Severance and other employee-related charges	$ (1)	$ 0	$ (1)	$ (25)