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Accrued Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Feb. 01, 2015
Apr. 27, 2014
Jan. 26, 2014
Payables and Accruals [Abstract]      
Compensation, commissions and related benefits $ 6,399us-gaap_EmployeeRelatedLiabilitiesCurrent $ 7,388us-gaap_EmployeeRelatedLiabilitiesCurrent $ 8,747us-gaap_EmployeeRelatedLiabilitiesCurrent
Interest 81us-gaap_InterestPayableCurrent 71us-gaap_InterestPayableCurrent 158us-gaap_InterestPayableCurrent
Other accrued expenses 3,474us-gaap_OtherAccruedLiabilitiesCurrent 1,722us-gaap_OtherAccruedLiabilitiesCurrent 2,907us-gaap_OtherAccruedLiabilitiesCurrent
Accrued expenses $ 9,954us-gaap_AccruedLiabilitiesCurrent $ 9,181us-gaap_AccruedLiabilitiesCurrent [1] $ 11,812us-gaap_AccruedLiabilitiesCurrent
[1] Derived from audited financial statements.