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Note 13 - Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 

Cost:

               

Land

  $ 22,176     $ 22,176  

Land improvements

    3,332       3,332  

Buildings and lease hold improvements

    101,642       100,404  

Plant and equipment

    986,348       971,178  
      1,113,498       1,097,090  

Less: accumulated depreciation

    (613,167 )     (583,868 )

Total

  $ 500,331     $ 513,222  
Property, Plant, and Equipment Held Under Finance Lease [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 

Cost:

               

Buildings

  $ 23,859     $ 23,859  

Plant and equipment

    589       589  

Total

    24,448       24,448  

Less: accumulated amortization

    (10,868 )     (10,315 )

Total

  $ 13,580     $ 14,133