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Warranty (Schedule Of Accrued Warranty Obligation) (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011
Balance at the beginning of the year	$ 4,613	$ 4,554
Warranty expense	3,279	2,167
Warranty payments	(3,612)	(2,461)
Balance at the end of the period	$ 4,280	$ 4,260

- 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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