Annual report pursuant to Section 13 and 15(d)

Note 2 - Summary of Significant Accounting Policies (Details Textual)

v3.23.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
$ in Millions
 3 Months Ended 4 Months Ended 12 Months Ended
Jan. 19, 2022
USD ($)
Feb. 25, 2021
Dec. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
MMBbls
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jan. 12, 2023
USD ($)
Oct. 13, 2022
USD ($)
Abandonment Funding Payment Due     $ 5.8 $ 5.8 $ 5.8        
Accounts Receivable, before Allowance for Credit Loss, Noncurrent, Total     $ 13.9 $ 13.9 $ 13.9 $ 9.6      
Foreign Currency Exchange Rate, Translation     612.6 612.6 612.6 578.2      
Prepaid Insurance     $ 2.7 $ 2.7 $ 2.7        
Prepaid Charter     0.9 0.9 0.9        
Foreign Currency Transaction Gain (Loss), before Tax, Total         (4.2) $ (0.7) $ (0.2)    
Etame Marine Block [Member]                  
Increase (Decrease) in Working Interest Ownership Percentage   27.80%              
Prepayments and Other [Member]                  
Prepaid Expense and Other Assets     4.0 4.0 4.0        
TransGlobe [Member]                  
Foreign Currency Exchange Rate, Translation                 0.724
Other Receivables $ 67.5   50.3 50.3 50.3       $ 67.5
Merged Concession Agreement, Development Term (Year) 15 years                
Merged Concession Agreement, Extension Term (Year) 5 years                
Proceeds from Collection of Other Receivables     17.2   17.2        
Prepaid Expense and Other Assets     7.2 7.2 7.2        
Sasol Gabon S.A. [Member]                  
Prepaid Royalties     4.8 4.8 4.8        
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member]                  
Other Receivables     18.2 $ 18.2 18.2        
Oil and Gas, Delivered (Million Barrels of Oil) | MMBbls       195          
Accounts Payable, Other, Current     17.9 $ 17.9 17.9        
Vaalco Energy Inc. and Other Etame Marin Block Owners [Member]                  
Accounts Receivable, before Allowance for Credit Loss, Noncurrent, Total     $ 21.8 $ 21.8 $ 21.8 $ 14.5      
Subsequent Event [Member]                  
Account Prior to Conversion               $ 37.3