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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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Mineral properties, net	$ 302,296		$ 302,296		$ 278,330
Mineral Properties, Gross	305,999		305,999		279,400
Mineral Properties, Accumulated Depletion	(3,703)		(3,703)		(1,070)
Depreciation	1,300	$ 660	3,730	$ 1,950
Mineral Properties
Property, Plant and Equipment [Line Items]
Depreciation				$ 230
Sheep Mountain
Property, Plant and Equipment [Line Items]
Mineral properties, net	34,183		34,183		34,183
Bahia Project
Property, Plant and Equipment [Line Items]
Mineral properties, net	32,613		32,613		32,613
Nichols Ranch ISR Project
Property, Plant and Equipment [Line Items]
Mineral properties, net	25,974		25,974		25,974
Roca Honda
Property, Plant and Equipment [Line Items]
Mineral properties, net	22,095		22,095		22,095
Pinyon Plain
Property, Plant and Equipment [Line Items]
Mineral properties, net	9,338		9,338		9,338
Other
Property, Plant and Equipment [Line Items]
Mineral properties, net	1,687		1,687		1,687
Toliara Project
Property, Plant and Equipment [Line Items]
Mineral Properties, Gross	$ 180,109		$ 180,109		$ 153,510

X

- Definition

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.

+ References

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

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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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