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Note 4 - Inventories (Tables)
3 Months Ended
May 31, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
May 31,
   
March 1,
 
   
2020
   
2020
 
                 
Inventories:
 
 
 
 
 
 
 
 
Raw materials
  $
5,481
    $
5,319
 
Work-in-process
   
205
     
254
 
Finished goods
   
994
     
806
 
   
$
6,680
   
$
6,379