v3.25.3

ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Mar. 31, 2025	Feb. 28, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Business Combination [Line Items]
Payments to acquire productive assets		$ 3,000
Net cost to acquire business						$ 0	$ (412)
Bargain purchase gain				$ 0	$ 0	$ 0	$ 19,898
FPSO
Business Combination [Line Items]
Consideration transferred			$ 20,000
Net cost to acquire business			$ 5,500
Svenska Petroleum Exploration Aktiebolag
Business Combination [Line Items]
Payments to acquire businesses	$ 40,200
Cash acquired from acquisition	31,800
Restricted cash	8,800
Cash received	400
Bargain purchase gain	$ 19,900							$ 6,400
CI-705 Block
Business Combination [Line Items]
Percentage of working interest		70.00%
Percentage of paying interest		100.00%

Asset Acquisition, Consideration Transferred, Percentage of Paying Interest

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VAALCO ENERGY INC /DE/ 10-Q