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Inventory (Tables)
9 Months Ended
Nov. 30, 2018
Inventory [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories by major category are as follows:

 
 
November 30,
2018
 
February 28,
2018
Raw materials
 
$
26,835

 
$
28,071

Work in process
 
3,004

 
2,485

Finished goods
 
88,977

 
87,436

Inventory, net
 
$
118,816

 
$
117,992