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MINERAL PROPERTIES AND PROPERTY, PLANT AND EQUIPMENT - Schedule of Summary of Mineral Properties (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Mineral properties, net	$ 320,977		$ 312,266
Mineral Properties, Gross	326,873		317,398
Less: accumulated depletion	(5,896)		(5,132)
Depreciation	1,340	$ 1,180
Sheep Mountain
Property, Plant and Equipment [Line Items]
Mineral properties, net	34,183		34,183
Bahia Project
Property, Plant and Equipment [Line Items]
Mineral properties, net	32,613		32,613
Nichols Ranch ISR Project
Property, Plant and Equipment [Line Items]
Mineral properties, net	25,974		25,974
Roca Honda
Property, Plant and Equipment [Line Items]
Mineral properties, net	22,095		22,095
Pinyon Plain
Property, Plant and Equipment [Line Items]
Mineral properties, net	10,039		9,338
Other
Property, Plant and Equipment [Line Items]
Mineral properties, net	1,687		1,687
Toliara Project
Property, Plant and Equipment [Line Items]
Mineral Properties, Gross	$ 200,282		$ 191,508