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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 29, 2012
Mar. 31, 2012
Summary of inventories    
Raw materials $ 19,718 $ 18,570
Work in process 5,987 6,270
Finished goods and other 36,931 37,406
Total Inventories $ 62,636 $ 62,246