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Note 3 - Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

As of

 
   

December 31, 2022

   

December 31, 2021

 

Land

  $ 7,344     $ 4,082  

Plant and buildings

    99,116       97,110  

Furniture and fixtures

    1,831       1,334  

Machinery and equipment

    15,209       5,294  

Tenant improvements

    56       -  

Construction in progress

    88,934       55,859  

Property held for development

    15,437       15,437  

Finance lease right of use assets

    3,045       2,317  

Total gross property, plant & equipment

    230,972       181,433  

Less accumulated depreciation

    (50,531 )     (46,332 )

Total net property, plant & equipment

  $ 180,441     $ 135,101  
Depreciation Of Property, Plant, and Equipment [Table Text Block]
   

Years

 

Plant and buildings

    20 - 30  

Machinery and equipment

    5 - 15  

Furniture and fixtures

    3 - 5