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Accounts Receivable (Tables)
 3 Months Ended
Jul. 31, 2016
Receivables [Abstract]  
Summary of Accounts Receivable
A summary of accounts receivable follows:
 
(dollars in thousands)                                                                                  
   July 31, 2016    
August 2, 2015
    
May 1, 2016
  
Customers                                                                            
   $ 24,669    
$
27,428
    
$
25,531
  
Allowance for doubtful accounts                                                                                               
     (850 )    
(935
)
    
(1,088
)
Reserve for returns and allowances and discounts  
     (1,129 )    
(786
)
    
(962
)
 
  
$
22,690
    
$
25,707
    
$
23,481
  
Summary of the Activity in the Allowance for Doubtful Accounts
A summary of the activity in the allowance for doubtful accounts follows:

   
Three months ended 
  
(dollars in thousands)
  
July 31, 2016
    
August 2, 2015
  
Beginning balance
  
$
(1,088
)
  
$
(851
)
Provision for bad debts
    
227
      
(96
)
Net write-offs, net of recoveries
    
11
      
12
  
Ending balance
  
$
(850
)
  
$
(935
)
Summary of the Activity in the Allowance for Returns and Allowances and Discounts Accounts
A summary of the activity in the allowance for returns and allowances and discounts accounts follows:

   
Three months ended 
  
(dollars in thousands)
  
July 31, 2016
    
August 2, 2015
  
Beginning balance
  
$
(962
)
  
$
(738
)
Provision for returns, allowances and discounts 
    
(919
)
    
(709
)
Credits issued
    
752
      
661
  
Ending balance
  
$
(1,129
)
  
$
(786
)