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Note 4 - Inventories
3 Months Ended
Jun. 30, 2019
Notes to Financial Statements  
Inventory Disclosure [Text Block]
Note
4
– Inventories
 
Major classes of inventory were as follows (in thousands):
  
   
June 30, 2019
   
March 31, 2019
 
Raw Materials
  $
614
    $
617
 
Work in Process
   
35
     
56
 
Finished Goods
   
19,800
     
18,861
 
Total inventory
  $
20,449
    $
19,534