Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Revenue (Details Textual)

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Note 6 - Revenue (Details Textual) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Jun. 20, 2026
Dec. 31, 2021
Taxes Payable, Current, Total $ 28,056   $ 3,128
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member]      
Purchase Agreement Payment Period (Day) 30 days    
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Foreign Tax Authority [Member] | Tax Administration of Gabon [Member]      
Taxes Payable, Current, Total $ 28,100   $ 3,100
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Vaalco Energy Inc. and Other Etame Marin Block Owners [Member]      
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]      
Working Interest Ownership, Percentage   10.00%  
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Government of Gabon [Member]      
Monthly Royalty Rate, Based on Production at the Published Price 13.00%