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Note 5 - Derivative Instruments (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Derivative Instruments [Table Text Block]
   

Asset (Liability)

 
   

September 30, 2024

   

December 31, 2023

 
   

Contract Quantity

   

Fair Value

   

Contract Quantity

   

Fair Value

 

Regulated fixed price future commitments, included in other current assets (in thousand barrels)

    105     $ 297       354     $ 1,736