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Note 10 - Inventories (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

March 31,

   

December 31,

 
   

2023

   

2022

 

Finished goods

  $ 30,784     $ 26,810  

Raw materials, equipment spares and consumables

    100,092       102,395  

Work-in-progress

    25,404       24,513  

Total

  $ 156,280     $ 153,718