Provision for Restructuring (Schedule of Restructuring Accrual Activity) (Details) (USD $)	6 Months Ended
	Jun. 26, 2011
Accrual at beginning of year	$ 7,522,000
Charged to earnings	3,331,000
Charge reversed to earnings	(239,000)
Cash payments	(3,299,000)
Exchange rate changes	314,000
Accrual at 6/26/2011	7,629,000
Lease termination costs	100,000
SG&A Restructuring Plan [Member]
Charged to earnings	3,100,000
SG&A Restructuring Plan [Member] | Severance and Other Employee-Related Charges [Member]
Accrual at beginning of year	6,660,000
Charged to earnings	2,577,000
Charge reversed to earnings	(118,000)
Cash payments	(2,545,000)
Exchange rate changes	314,000
Accrual at 6/26/2011	6,888,000
SG&A Restructuring Plan [Member] | Other Exit Costs [Member]
Charged to earnings	610,000	[1]
Cash payments	(128,000)	[1]
Accrual at 6/26/2011	482,000	[1]
Manufacturing Restructuring Plan [Member]
Charged to earnings	23,000
Lease termination costs	600,000
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	(110,000)
Cash payments	(494,000)
Accrual at 6/26/2011	184,000
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 6/26/2011	$ 75,000	[2]

[1] During the first six months of 2011, there was a net charge to earnings of $0.6 million 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 six months of 2011, there was a net charge to earnings of $0.1 million due to other exit costs associated with the manufacturing closings.