Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Organization and Accounting Policies (Details Textual)

v3.23.1
Note 1 - Organization and Accounting Policies (Details Textual)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 12, 2023
USD ($)
Jan. 01, 2023
USD ($)
Jan. 19, 2022
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2023
USD ($)
$ / item
Dec. 31, 2022
USD ($)
$ / item
Sep. 30, 2022
$ / item
Jun. 30, 2022
$ / item
Mar. 31, 2022
USD ($)
$ / item
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Oct. 13, 2022
USD ($)
Oil and Gas, Average Sale Price (in USD per Per Share) | $ / item         81 88 100 113 100      
Payments for Abandonment Funding         $ 15,600           $ 0  
Abandonment Funding Payment Due           $ 5,800            
Reestablishment of Currency Denominated Account $ 37,300                      
Abandonment Funding Payment Approved       $ 26,600 26,600              
Abandonment Funding Payment Approved, Attributable to Company       15,600 15,600              
Payment Received for Abandonment       15,600                
Value Added Tax Receivable       14,900 14,900 13,900            
Accounts Receivable, Credit Loss Expense (Reversal)         935       $ 492      
Provision for Doubtful Accounts Transferred         300              
Accounts Receivable, Allowance for Credit Loss       12,832 12,832 8,704     $ 6,135 $ 5,741    
Prepayments for Fixed Assets       2,500 2,500              
Prepaid Insurance       1,900 1,900              
Advances to Contractors       2,200 2,200              
Other Prepaid Expense, Current       $ 5,300 $ 5,300              
Office Equipment [Member] | Maximum [Member]                        
Property, Plant and Equipment, Useful Life (Year)       5 years 5 years              
Leasehold Improvements [Member] | Maximum [Member]                        
Property, Plant and Equipment, Useful Life (Year)       7 years 7 years              
Leasehold Improvements [Member] | Minimum [Member]                        
Property, Plant and Equipment, Useful Life (Year)       5 years 5 years              
GABON                        
Prepaid Royalties       $ 1,600 $ 1,600              
EGYPT                        
Prepaid Fuel       3,900 3,900              
Tax Administration of Gabon [Member]                        
Provision for Value Added Tax         600              
Block P Offshore Equatorial Guinea [Member]                        
Accounts Receivable, Allowance for Credit Loss       $ 300 300              
Oil Delivery [Member]                        
Accounts Receivable, Credit Loss Expense (Reversal)         $ 400              
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]                        
Other Receivables   $ 18,200                    
Accounts Receivable, Credit Loss Expense (Reversal)   3,100                    
Accounts Receivable, Allowance for Credit Loss   $ 3,100       $ 3,120       $ (0)    
Communaute Financiere Africaine BEAC, Francs                        
Foreign Currency Exchange Rate, Translation       602.976 602.976 612.6            
Canada, Dollars                        
Foreign Currency Exchange Rate, Translation       0.738 0.738 0.739            
Vaalco Energy Inc. and Other Etame Marin Block Owners [Member]                        
Value Added Tax Receivable       $ 22,900 $ 22,900 $ 21,800            
TransGlobe [Member]                        
Merged Concession Agreement, Development Term (Year)     15 years                  
Merged Concession Agreement, Extension Term (Year)     5 years                  
Other Receivables     $ 67,500 50,300 50,300             $ 67,500
Proceeds From Other Receivables           $ 17,200            
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member]                        
Accounts Payable, Other, Current       17,900 17,900              
Other Accrued Liabilities, Current       2,500 2,500              
Other, Net [Member]                        
Accounts Receivable, after Allowance for Credit Loss       $ 16,800 $ 16,800              
Purchase Commitment [Member]                        
Number of Contracts Entered Into                   2