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Note 13 - Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

March 31,

  

December 31,

 
  

2022

  

2021

 

Cost:

        

Land

 $21,860  $21,580 

Land improvements

  3,056   3,054 

Buildings and lease hold improvements

  102,980   104,660 

Plant and equipment

  714,072   701,400 
   841,968   830,694 

Less: accumulated depreciation

  (377,486)  (352,114)

Total

 $464,482  $478,580 
  

March 31,

  

December 31,

 
  

2022

  

2021

 

Cost:

        

Buildings

 $18,623  $18,623 

Plant and equipment

  1,275   1,275 

Total

  19,898   19,898 

Less: accumulated amortization

  (8,074)  (7,733)

Total

 $11,824  $12,165