XML 113 R47.htm IDEA: XBRL DOCUMENT v3.24.0.1
PROPERTY, PLANT AND EQUIPMENT AND MINERAL PROPERTIES Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 62,048 $ 45,836
Less: accumulated depreciation (35,925) (33,174)
Property, Plant and Equipment, Net, Total $ 26,123 12,662
Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 3 years  
Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 15 years  
Land    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 642 642
Plant facilities    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 29,750 29,509
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]    
Useful life (in years) 5 years  
Total property, plant and equipment $ 13,019 10,560
Light trucks and utility vehicles    
Property, Plant and Equipment [Line Items]    
Useful life (in years) 5 years  
Total property, plant and equipment $ 3,256 2,867
Office furniture and equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 1,754 1,585
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    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment $ 13,627 $ 673