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Warranty (Summary Of Accrued Warranty Obligation) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011
Balance at the beginning of the year	$ 4,613	$ 4,554
Warranty expense	4,667	4,051
Warranty payments	(5,222)	(4,115)
Balance at the end of the period	$ 4,058	$ 4,490

- Definition

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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