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Inventories (Tables)
9 Months Ended
Jan. 28, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consisted of the following: 
 
January 28,
2017
 
April 30,
2016
Raw materials
$
23,749

 
$
28,184

Work-in-process
7,362

 
6,158

Finished goods
30,811

 
35,485

 
$
61,922

 
$
69,827