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Inventories (Tables)
 3 Months Ended
Apr. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory
The following table presents breakdown of the Company’s inventories as of April 30, 2019, January 31, 2019 and April 30, 2018 (in thousands):
 
 
4/30/2019
 
1/31/2019
 
4/30/2018
 
 
 
 
 
 
 
 Finished goods
 
$
26,546

 
$
15,908

 
$
26,655

 WIP
 
24,009

 
18,820

 
22,796

 Raw materials
 
12,956

 
12,561

 
13,047

 Inventories
 
$
63,511

 
$
47,289

 
$
62,498