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Accrued Expenses (Detail) - USD ($)
$ in Thousands
Jan. 27, 2019
Apr. 29, 2018
Jan. 28, 2018
Payables and Accruals [Abstract]      
Compensation, commissions and related benefits $ 4,848 $ 6,918 $ 6,288
Interest   20 5
Other accrued expenses 4,892 3,150 2,549
Accrued expenses $ 9,740 $ 10,088 $ 8,842