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Note 13 - Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

March 31,

  

December 31,

 
  

2023

  

2022

 

Cost:

        

Land

 $22,261  $22,261 

Land improvements

  3,054   3,054 

Buildings and lease hold improvements

  98,456   98,490 

Plant and equipment

  815,291   789,910 
   939,062   913,715 

Less: accumulated depreciation

  (476,652)  (451,399)

Total

 $462,410  $462,316 
  

March 31,

  

December 31,

 
  

2023

  

2022

 

Cost:

        

Buildings

 $18,623  $18,623 

Plant and equipment

  589   1,275 

Total

  19,212   19,898 

Less: accumulated amortization

  (8,737)  (9,085)

Total

 $10,475  $10,813 

 

Depreciation expense relating to property, plant and equipment, including assets under finance leases, was $25.5 million and $26.0 million for the three months ended March 31, 2023 and 2022, respectively.