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Note 6 - Assets Held For Sale (Tables)
12 Months Ended
Mar. 31, 2022
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]  
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
  As of: 
  

March 31,

  

March 31,

 
  

2022

  

2021

 

Property, plant and equipment (net)

 $5,979  $8,656 

Current assets held for sale

 $5,979  $8,656