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Product Warranty (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Apr. 02, 2011
Product Warranty      
Product warranty accrual, beginning $ 4,187 $ 4,415 $ 2,576
Warranty charges incurred, net (7,381) (7,200) (6,818)
Provision for warranty charges 8,605 6,972 8,657
Product warranty accrual, ending $ 5,411 $ 4,187 $ 4,415