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Inventories (Tables)
 3 Months Ended
Jul. 31, 2016
Inventory Disclosure [Abstract]  
Summary of Inventories
A summary of inventories follows:
 
(dollars in thousands)
  
July 31, 2016
    
August 2, 2015
    
May 1, 2016
  
Raw materials
  
$
6,779
    
$
6,944
    
$
5,462
  
Work-in-process
    
3,224
      
3,018
      
2,972
  
Finished goods
    
38,128
      
36,582
      
38,097
  
   
$
48,131
    
$
46,544
    
$
46,531