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Accounting Policies - Schedule of Oil and Gas Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Provisional oil sales contracts	$ 2,792	$ 9,298	$ 10,675	$ (11,808)
Oil and gas revenue	310,959	407,794	993,729	1,277,797
Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	311,923	412,468	1,002,300	1,282,607
Provisional oil sales contracts	(964)	(4,674)	(8,571)	(4,810)
Oil and gas revenue	310,959	407,794	993,729	1,277,797
Ghana | Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	143,134	237,725	508,818	828,279
Equatorial Guinea | Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	40,753	71,267	137,631	187,328
Mauritania/Senegal | Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	39,343	0	62,279	0
Gulf of America | Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 88,693	$ 103,476	$ 293,572	$ 267,000

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