Provision For Restructuring (Schedule Of Restructuring Accrual Activity) (Details) (USD $)	9 Months Ended
	Sep. 25, 2011
Accrual at Beginning of Year	$ 7,522,000
Charged to Earnings	13,295,000
Charge Reversed to Earnings	(290,000)
Cash Payments	(5,560,000)
Exchange Rate Changes	52,000
Accrual at September 25, 2011	15,019,000
Global Restructuring Plan [Member]
Charged to Earnings	13,600,000
Global Restructuring Plan [Member] | Severance And Other Employee-Related Charges [Member]
Charged to Earnings	6,085,000
Accrual at September 25, 2011	6,085,000
SG&A Restructuring Plan [Member]
Charged to Earnings	6,900,000
Lease termination costs	800,000
SG&A Restructuring Plan [Member] | Severance And Other Employee-Related Charges [Member]
Accrual at Beginning of Year	6,660,000
Charged to Earnings	6,240,000
Charge Reversed to Earnings	(120,000)
Cash Payments	(4,349,000)
Exchange Rate Changes	65,000
Accrual at September 25, 2011	8,496,000
SG&A Restructuring Plan [Member] | Other Exit Costs [Member]
Charged to Earnings	826,000	[1]
Cash Payments	(494,000)	[1]
Exchange Rate Changes	(13,000)	[1]
Accrual at September 25, 2011	319,000	[1]
Manufacturing Restructuring Plan [Member]
Charged to Earnings	26,000
Lease termination costs	100,000
Manufacturing Restructuring Plan [Member] | Severance And Other Employee-Related Charges [Member]
Accrual at Beginning of Year	719,000
Charged to Earnings	69,000
Charge Reversed to Earnings	(159,000)
Cash Payments	(585,000)
Accrual at September 25, 2011	44,000
Manufacturing Restructuring Plan [Member] | Other Exit Costs [Member]
Accrual at Beginning of Year	143,000	[2]
Charged to Earnings	75,000	[2]
Charge Reversed to Earnings	(11,000)	[2]
Cash Payments	(132,000)	[2]
Accrual at September 25, 2011	$ 75,000	[2]

[1] During the first nine months of 2011, there was a net charge to earnings of $0.8 million primarily due to the closing of an operating facility and one-time payment related to a lease modification for an operating facility.

[2] During 2010, costs were recorded due to the closing of a manufacturing facility. For the first nine months of 2011, there was a net charge to earnings of $0.1 million due to other exit costs associated with the manufacturing closings.