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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The accumulated decrease in the carrying value of the mineral properties as a result of mine or mineral production.

+ References

No definition available.

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Carrying amount at the balance sheet date of mineral properties, gross of adjustments.

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Mineral properties, net of adjustments.

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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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MINERAL PROPERTIES AND PROPERTY, PLANT AND EQUIPMENT - Schedule of Summary of Mineral Properties (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	$ 369,150		$ 369,150		$ 312,266
Mineral Properties, Gross	376,596		376,596		317,398
Total mineral properties	(7,446)		(7,446)		(5,132)
Depreciation	1,820	$ 1,300	4,600	$ 3,730
Exploration, development and processing	12,151	$ 12,704	29,021	$ 28,645
Vara Mada Project
Property, Plant and Equipment [Line Items]
Mineral Properties, Gross	215,007		215,007		191,508
Sheep Mountain
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	34,183		34,183		34,183
Bahia Project
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	32,613		32,613		32,613
Dubbo Project
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	34,671		34,671		0
Nichols Ranch ISR Project
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	25,974		25,974		25,974
Roca Honda
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	22,095		22,095		22,095
Pinyon Plain
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	11,657		11,657		9,338
Other
Property, Plant and Equipment [Line Items]
Less: accumulated depletion	396		396		$ 1,687
Wate Project
Property, Plant and Equipment [Line Items]
Exploration, development and processing	$ 1,290		$ 1,290