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Inventories (Tables)
3 Months Ended
Aug. 02, 2015
Inventory Disclosure [Abstract]  
Summary of Inventories
A summary of inventories follows:                   
(dollars in thousands)
 
August 2, 2015
   
August 3, 2014
   
May 3, 2015
 
Raw materials
  $ 6,944     $ 6,145     $ 5,374  
Work-in-process
    3,018       2,174       2,766  
Finished goods
    36,582       33,369       34,344  
    $ 46,544     $ 41,688     $ 42,484