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Inventories
9 Months Ended
Jan. 31, 2016
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)
 
January 31, 2016
   
February 1, 2015
   
May 3, 2015
 
Raw materials
  $ 6,831     $ 5,787     $ 5,374  
Work-in-process
    3,365       2,227       2,766  
Finished goods
    38,289       29,999       34,344  
    $ 48,485     $ 38,013     $ 42,484