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Note 2 - Assets Held For Sale (Tables)
12 Months Ended
Mar. 31, 2020
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]  
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
Property, Plant and Equipment (net)
  $
1,568
 
Current Assets Held For Sale
  $
1,568
 
         
Capital Lease Obligations Current Portion
  $
61
 
Current Liabilities Held For Sale
  $
61
 
         
Capital Lease Obligations
  $
305
 
Noncurrent Liabilities Held For Sale
  $
305