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Inventories
3 Months Ended
Jul. 30, 2017
Inventory Disclosure [Abstract]  
Inventories
5.  Inventories

Inventories are carried at the lower of cost or market.  Cost is determined using the FIFO (first-in, first-out) method.

A summary of inventories follows:
 
(dollars in thousands)
 
July 30, 2017
   
July 31, 2016
   
April 30, 2017
 
Raw materials
 
$
6,956
   
$
6,779
   
$
6,456
 
Work-in-process
   
2,782
     
3,224
     
3,095
 
Finished goods
   
45,489
     
38,128
     
41,931
 
   
$
55,227
   
$
48,131
   
$
51,482