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Supplemental Financial Information (Schedule Of Warranty Liability Activity, II) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012	Mar. 31, 2012	Dec. 31, 2011
Supplemental Financial Information [Abstract]
Warranty liabilities	$ 252	$ 235	$ 201	$ 189
Less current portion	(151)		(121)
Long-term warranty obligations	$ 101		$ 80

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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