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Note 10 - Inventories (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

June 30,

   

December 31,

 
   

2023

   

2022

 

Finished goods

  $ 22,757     $ 26,810  

Raw materials, equipment spares and consumables

    108,547       102,395  

Work-in-progress

    24,037       24,513  

Total

  $ 155,341     $ 153,718