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Accounts Receivable (Detail) - USD ($)
$ in Thousands
Jan. 31, 2016
May. 03, 2015
Feb. 01, 2015
Apr. 27, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Customers $ 28,684 $ 30,338 $ 31,952  
Accounts receivable, net 26,784 28,749 [1] 30,774  
Allowance for doubtful accounts [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Valuation allowance, balance (814) (851) (449) $ (573)
Reserve for returns and allowances and discounts [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Valuation allowance, balance $ (1,086) $ (738) $ (729) $ (479)
[1] Derived from audited financial statements.