Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Crude Oil, Natural Gas and NGLs Properties and Equipment (Details Textual)

v3.23.2
Note 7 - Crude Oil, Natural Gas and NGLs Properties and Equipment (Details Textual)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 20, 2026
Jan. 20, 2022
USD ($)
Sep. 25, 2018
Feb. 28, 2023
USD ($)
Sep. 30, 2022
ha
Mar. 31, 2023
USD ($)
Dec. 31, 2020
USD ($)
Sep. 16, 2028
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 13, 2022
USD ($)
Apr. 30, 2021
Apr. 12, 2021
Feb. 25, 2021
USD ($)
Mar. 31, 2020
USD ($)
Sep. 17, 2018
USD ($)
Dec. 31, 2012
Block P Offshore Equatorial Guinea [Member]                                  
Business Acquisition, Percentage of Voting Interests Acquired                                 31.00%
Additional Ownership Interest Acquired             12.00%                    
Asset Acquisition, Percent Interest Acquired             43.00%                    
Asset Acquisition, Contingent Consideration Arrangements, Range of Outcomes, Value, High             $ 3.1                    
Etame Marine Block [Member]                                  
Unproved Oil and Gas Property, Successful Effort Method                           $ 2.2      
EQUATORIAL GUINEA                                  
Effective Statutory Income Tax Rate, Percent         25.00%                        
EGYPT                                  
Undeveloped Leasehold Value                 $ 13.9   $ 13.6            
CANADA                                  
Undeveloped Leasehold Value                 $ 16.7   $ 16.7            
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member]                                  
Deferred Tax Assets, Property, Plant and Equipment                               $ 18.6  
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Signing Bonus [Member]                                  
Capitalized Costs, Unproved Properties                               6.7  
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Tax Effect [Member]                                  
Capitalized Costs, Unproved Properties                               $ 7.1  
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Forecast [Member] | Etame Marine Block [Member]                                  
Increase (Decrease) in Working Interest Ownership Percentage 1.60%                                
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Vaalco Energy Inc. and Other Etame Marin Block Owners [Member]                                  
Entitled Percent for Consortium After Initial Royalty Percentage     80.00%                            
Period of Agreement for Exploitation Areas (Year)     10 years                            
Working Interest Ownership, Percentage                 7.50%                
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Vaalco Energy Inc. and Other Etame Marin Block Owners [Member] | Forecast [Member]                                  
Entitled Percent for Consortium After Initial Royalty Percentage               70.00%                  
Working Interest Ownership, Percentage 10.00%                                
Merged Concession Agreement with EGPC [Member]                                  
Number of Concession Agreements Merged   3                              
Concession Agreement, Term (Year)   15 years                              
Annual Modernization Payments   $ 10.0                              
Credit issued Against Receivables   10.0                              
Minimum Financial Work Commitments   $ 50.0                              
Financial Work Commitments Duration (Year)   5 years                              
Etame Marine Block [Member]                                  
Joint Venture Project, Ownership, Percent                 63.575%                
Unproved Oil and Gas Property, Successful Effort Method                             $ 2.3    
Undeveloped Leasehold Value                   $ 13.7         $ 11.5    
Etame Marine Block [Member] | Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member]                                  
Number of Contract Extension Periods     2                            
Production License Agreement Term Extended by Government (Year)     5 years                            
Etame Marine Block [Member] | Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Forecast [Member]                                  
Increase (Decrease) in Working Interest Ownership Percentage 2.50%                                
Block P Offshore Equatorial Guinea [Member]                                  
Joint Venture Project, Ownership, Percent       60.00%                 45.90%        
Period of Development Area (Year)         25 years 25 years                      
Area of Land (Hectare) | ha         23,144                        
Cost Oil Maximum, Percent         70.00%                        
Asset Acquisition, Contingent Consideration Arrangements, Range of Outcomes, Value, High       $ 6.8                          
Joint Venture Project, Additional Working Interest Percentage       14.10%                          
Unproved Oil and Gas Property, Successful Effort Method           $ 10.0                      
Block P Offshore Equatorial Guinea [Member] | Crown Energy [Member]                                  
Working Interest Ownership, Percentage                       5.00%          
Block P Offshore Equatorial Guinea [Member] | Royalty for the First 10,000 bopd [Member]                                  
Percent of Oil Profit         10.00%                        
Block P Offshore Equatorial Guinea [Member] | Royalty for the 10,000 bopd to 25,000 bopd Tranche [Member]                                  
Percent of Oil Profit         11.00%                        
Block P Offshore Equatorial Guinea [Member] | The States Share of Oil Profit Up to 25 Million bbl [Member]                                  
Percent of Oil Profit         10.00%                        
Block P Offshore Equatorial Guinea [Member] | The States Share of Oil Profit Up to 25 to 50 Million bbl [Member]                                  
Percent of Oil Profit         20.00%                        
Venus Development [Member]                                  
Area of Land (Hectare) | ha         8,476