XML 24 R37.htm IDEA: XBRL DOCUMENT v3.3.1.900
Accounts Receivable (Detail) - USD ($)
$ in Thousands
Nov. 01, 2015
May. 03, 2015
Nov. 02, 2014
Apr. 27, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Customers $ 25,045 $ 30,338 $ 26,082  
Accounts receivable, net 23,314 28,749 [1] 25,045  
Allowance for doubtful accounts [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Valuation allowance, balance (826) (851) (442) $ (573)
Reserve for returns and allowances and discounts [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Valuation allowance, balance $ (905) $ (738) $ (595) $ (479)
[1] Derived from audited financial statements.