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Note 6 - Inventories (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

As of December 31,

 

(in thousands)

 

2022

   

2021

 

Unprocessed

  $ 356,588     $ 417,595  

Processed and finished

    60,343       67,434  

Total

  $ 416,931     $ 485,029