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Accrued Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 26, 2014
Apr. 28, 2013
Jan. 27, 2013
Schedule of Accrued Liabilities [Line Items]      
Compensation, commissions and related benefits $ 8,747 $ 9,831 $ 9,417
Interest 158 111 243
Other accrued expenses 2,907 1,887 3,163
Accrued expenses $ 11,812 $ 11,829 [1] $ 12,823
[1] Derived from audited financial statements.