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Accrued Expenses (Detail) - USD ($)
$ in Thousands
Jul. 30, 2017
Apr. 30, 2017
Jul. 31, 2016
Payables and Accruals [Abstract]      
Compensation, commissions and related benefits $ 4,535 $ 10,188 $ 5,400
Advertising rebates 347 468 485
Interest 19 51 7
Other accrued expenses 1,174 1,240 998
Accrued expenses $ 6,075 $ 11,947 [1] $ 6,890
[1] Derived from audited financial statements.