Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-28

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 23
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-23

Name:	us-gaap_ExplorationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Exploration expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Exploration expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Exploration expenses
Exploration expenses	$ 21,408	$ 14,078	$ 44,614	$ 29,863
Santa Cruz, USA
Exploration expenses
Exploration expenses	10,537	5,425	20,037	11,929
Gleeson, USA
Exploration expenses
Exploration expenses	3,985	180	6,615	276
Hog Heaven, USA
Exploration expenses
Exploration expenses	1,161	394	4,364	1,267
Alacrán, Colombia
Exploration expenses
Exploration expenses	0	4,354	3,334	7,691
Ivory Coast Project, Ivory Coast
Exploration expenses
Exploration expenses	739	331	1,093	656
Chile Exploration Collaboration, Chile
Exploration expenses
Exploration expenses	0	0	664	0
Tintic, USA
Exploration expenses
Exploration expenses	193	474	427	1,185
Project generation and other
Exploration expenses
Exploration expenses	$ 4,793	$ 2,920	$ 8,080	$ 6,859