Accounting Policies - Schedule of Oil and Gas Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Provisional oil sales contracts	$ 15,469	$ 5,904	$ 7,883	$ (21,106)
Oil and gas revenue	392,635	450,900	682,770	870,003
Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	399,415	447,848	690,377	870,139
Provisional oil sales contracts	(6,780)	3,052	(7,607)	(136)
Oil and gas revenue	392,635	450,900	682,770	870,003
Ghana \| Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	212,880	334,917	365,685	590,554
Equatorial Guinea \| Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	63,196	36,831	96,878	116,061
Mauritania/Senegal \| Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	20,239	0	22,936	0
Gulf of America \| Oil and gas revenue
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 103,100	$ 76,100	$ 204,878	$ 163,524

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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