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Note 13 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

As of June 30, 2024

                      

Net Fair Value

 
  

Quoted Prices

                  

Presented in the

 
  

in Active Markets

  

Significant Other

  

Significant

          

Unaudited

 
  

for Identical

  

Observable

  

Unobservable

          

Condensed

 
  

Assets

  

Inputs

  

Inputs

  

Total Gross

  

Effect of

  

Consolidated

 
  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Fair Value

  

Netting

  

Balance Sheet

 

(in thousands)

 

Assets

                        

Current:

                        

Commodity derivatives

 $-  $12  $-  $12  $(12) $- 
                         

Liabilities

                        

Current:

                        

Commodity derivatives

 $-  $(109) $-  $(109) $12  $(97)

Non-Current:

                        

Commodity derivatives

 $-  $(77) $-  $(77) $-  $(77)
                         

Net commodity derivative instruments

 $-  $(174) $-  $(174) $-  $(174)

As of December 31, 2023

                      

Net Fair Value

 
  

Quoted Prices

                  

Presented in the

 
  

in Active Markets

  

Significant Other

  

Significant

          

Unaudited

 
  

for Identical

  

Observable

  

Unobservable

          

Condensed

 
  

Assets

  

Inputs

  

Inputs

  

Total Gross

  

Effect of

  

Consolidated

 
  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Fair Value

  

Netting

  

Balance Sheet

 

(in thousands)

 

Assets

                        

Current:

                        

Commodity derivatives

 $-  $1,844  $-  $1,844  $-  $1,844 
                         

Net commodity derivative instruments

 $-  $1,844  $-  $1,844  $-  $1,844 
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

June 30, 2024

  

December 31, 2023

 

Current assets:

        

Marketable equity securities

        

Number of shares owned

  2,421,180   2,421,180 

Quoted market price

 $0.06579  $0.06789 
         

Fair value of marketable equity securities

 $159,281  $164,375