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Accrued Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Jul. 29, 2012
Apr. 29, 2012
Jul. 31, 2011
Schedule of Accrued Liabilities [Line Items]      
Compensation, commissions and related benefits $ 5,751 $ 7,293  
Interest 323 147  
Other accrued expenses 2,292 1,881  
Accrued expenses $ 8,366 $ 9,321 [1] $ 5,862
[1] Derived from audited financial statements.