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Inventories
3 Months Ended
Apr. 30, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories, consisting of material, material overhead, labor, and manufacturing overhead, are stated at the lower of cost (first-in, first-out) or market and consist of the following:
 
(in thousands)
April 30, 2017
 
January 29, 2017
Raw materials
$
2,991

 
$
2,968

Work in progress
51,451

 
44,740

Finished goods
22,308

 
18,164

Inventories
$
76,750

 
$
65,872