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MINERAL PROPERTIES AND PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment $ 99,413   $ 95,925
Less: accumulated depreciation (42,382)   (40,738)
Property, plant and equipment, net 57,031   55,187
Depreciation 1,180 $ 670  
Land      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment 1,015   1,015
Plant facilities      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment $ 65,068   63,537
Plant facilities | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated Useful Lives 12 years    
Plant facilities | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated Useful Lives 15 years    
Mining equipment      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment $ 25,408   22,187
Mining equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated Useful Lives 5 years    
Mining equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated Useful Lives 10 years    
Light trucks and utility vehicles      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment $ 4,025   4,081
Estimated Useful Lives 5 years    
Office furniture and equipment      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment $ 1,936   1,918
Office furniture and equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated Useful Lives 4 years    
Office furniture and equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated Useful Lives 7 years    
Construction-in-progress      
Property, Plant and Equipment [Line Items]      
Total property, plant and equipment $ 1,961   $ 3,187
White Mesa Mill      
Property, Plant and Equipment [Line Items]      
Depreciation $ 460 $ 70