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Note 4 - Inventories, Net (Tables)
6 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30, 2021

  

March 31, 2021

 

Raw materials

 $7,610  $5,755 

Work in process

  423   426 

Finished goods

  4,084   4,997 

Inventories, net

 $12,117  $11,178