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Reclamation and Remediation - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Sep. 30, 2025	Dec. 31, 2023
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Increase in estimated liability	$ 500
Reclamation liabilities	1,839	$ 2,052	$ 2,233
Reclamation and remediation discount rate		10.00%
Asset retirement obligation	8,838	$ 10,450	$ 9,562
Don David Gold Mine
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Reclamation liabilities	1,800	2,100
Asset retirement obligation	$ 8,800	$ 10,500

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- Definition

Amount of increase in estimated liability.

+ References

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- Definition

Reclamation And Remediation Discount Rate

+ References

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- Definition

Reclamation Liabilities

+ References

No definition available.

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- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481999/410-20-25-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483041/730-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483041/730-20-50-1

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