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Note 8 - 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

 
  

(in thousands)

 

Refinery and facilities

 $72,675  $72,675 

Land

  566   566 

Other property and equipment

  913   913 
   74,154   74,154 
         

Less: Accumulated depreciation and amortiation

  (23,608)  (22,966)
   50,546   51,188 
         

Construction in progress

  3,770   3,770 
  $54,316  $54,958