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Note 10 - Property, Plant and Equipment (Tables)
3 Months Ended
Jun. 30, 2023
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

June 30, 2023

  

March 31, 2023

 

Land

 $980  $980 

Construction in progress - equipment

  687   748 

Buildings

  5,416   5,416 

Equipment and software

  43,416   43,156 

Finance lease - right of use asset

     1 

Furniture and fixtures

  1,535   1,535 

Leasehold improvements

  6,815   6,815 

Property, plant and equipment, gross

  58,849   58,651 

Less accumulated depreciation

  (46,902)  (46,342)

Property, plant and equipment, net

 $11,947  $12,309