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Accrued Expenses (Detail) - USD ($)
$ in Thousands
Jul. 29, 2018
Apr. 29, 2018
Jul. 30, 2017
Payables and Accruals [Abstract]      
Compensation, commissions and related benefits $ 3,719 $ 6,918 $ 4,535
Interest 12 20 19
Other accrued expenses 5,194 3,150 1,521
Accrued expenses $ 8,925 $ 10,088 $ 6,075