VAALCO Energy, Inc. Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Revenue (Details Textual) - USD ($) $ in Millions	6 Months Ended
Note 6 - Revenue (Details Textual) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 20, 2026	Dec. 31, 2022
Recovery Cost Assigned, Percent	100.00%
Minimum [Member]
Recovery Cost Assigned, Percent	5.00%
Cost of Oil, Percent	25.00%
Allocation of Profit, Percent	67.00%
Maximum [Member]
Recovery Cost Assigned, Percent	15.00%
Cost of Oil, Percent	40.00%
Allocation of Profit, Percent	84.00%
Egyptian General Petroleum Corporation (EGPC), Merged Concession Agreement [Member]
Ownership Percentage	50.00%
Egyptian General Petroleum Corporation (EGPC), South Ghazalat Concession Agreement [Member]
Ownership Percentage	50.00%
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] \| Foreign Tax Authority [Member] \| Tax Administration of Gabon [Member]
Income Taxes Receivable	$ 16.7		$ 2.8
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%