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Other Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 29, 2012
Mar. 31, 2012
Other Assets [Line Items]    
Minority equity investment $ 8,966 $ 8,966
Consignment and demo equipment, net 4,459 4,394
Other 1,440 903
Other assets $ 14,865 $ 14,263