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MINERAL PROPERTIES AND PROPERTY, PLANT AND EQUIPMENT Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 95,925 $ 62,048
Less: accumulated depreciation (40,738) (35,925)
Property, plant and equipment, net $ 55,187 26,123
Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 3 years  
Land    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 1,015 642
Plant facilities    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 63,537 29,750
Plant facilities | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 12 years  
Plant facilities | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 15 years  
Mining equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 22,187 13,019
Mining equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 5 years  
Mining equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 10 years  
Light trucks and utility vehicles    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 5 years  
Total property, plant and equipment $ 4,081 3,256
Office furniture and equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 1,918 1,754
Office furniture and equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 4 years  
Office furniture and equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 7 years  
Construction-in-progress(1)    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 3,187 $ 13,627