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Note 9 - Property, Plant and Equipment (Tables)
12 Months Ended
Mar. 31, 2024
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

March 31, 2024

  

March 31, 2023

 

Land

 $980  $980 

Construction in progress - equipment

  226   748 

Buildings

  5,416   5,416 

Equipment and software

  44,095   43,156 

Finance lease - right of use asset

     1 

Furniture and fixtures

  1,526   1,535 

Leasehold improvements

  6,990   6,815 

Property, plant and equipment, gross

  59,233   58,651 

Less accumulated depreciation

  (48,372)  (46,342)

Property, plant and equipment, net

 $10,861  $12,309