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Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Restructuring Reserve [Roll Forward]
Restructuring Reserve	$ 921		$ 921		$ 1,064	$ 2,242	$ 4,526
Restructuring Charges	4	(10)	159	(107)	(50)	(261)
Payments for Restructuring			(302)		(1,128)	(2,023)
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	158		158		160	293	590
Restructuring Charges			8		19	(45)
Payments for Restructuring			(10)		(152)	(252)
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	763		763		904	1,949	3,936
Restructuring Charges			151		(69)	(216)
Payments for Restructuring			$ (292)		$ (976)	$ (1,771)

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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