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Product Warranty (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Apr. 03, 2012
Product Warranty
Product warranty accrual, beginning	$ 5,193		$ 5,411	$ 4,187	$ 4,545
Warranty charges incurred, net	1,722	(1,866)	3,543	(3,910)
Provision for warranty charges	2,092	3,417	3,695	5,819
Product warranty accrual, ending	$ 5,563	$ 6,096	$ 5,563	$ 6,096	$ 4,545

- 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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