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MINERAL PROPERTIES AND PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
May 03, 2023
USD ($)
Feb. 14, 2023
USD ($)
subsidiary
$ / shares
Feb. 10, 2023
USD ($)
purchaseAgreement
May 19, 2022
USD ($)
mi
mineralConcession
a
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Property, Plant and Equipment [Line Items]              
Depreciation, Depletion and Amortization         $ 3,127 $ 2,751 $ 3,269
Depreciation         2,990 2,750 3,270
Number Of Purchase Agreements | purchaseAgreement     2        
Purchase Agreements, Number Of Mineral Concessions Acquired | mineralConcession       17      
Purchase Agreement, Acres To Purchase | a       37,300      
Purchase Agreement, Miles To Purchase | mi       58.3      
Purchase Agreement, Purchase Price       $ 27,500      
Purchase Agreement, Deposit Payment       $ 5,900      
Purchase Agreement, Payment Due At Closing     $ 21,600        
Purchase Agreement, Direct Deal Costs         1,630    
Gain On Disposal Of Non-Core Assets         74 119,257 366
Restricted Cash And Cash Equivalents, Held-For-Sale         0 0 3,590
Disposal Group Not Discontinued Operation Gain Loss On Disposal Statement Of Income Extensible List Not Disclosed Flag gain            
Release Of Restricted Cash         0 3,590 0
Alta Mesa Divestiture              
Property, Plant and Equipment [Line Items]              
Proceeds from Sale of Productive Assets $ 3,100            
Disposal Group, Including Discontinued Operation, Consideration   $ 120,000          
Noncash or Part Noncash Divestiture, Amount of Consideration Received   $ 60,000          
Convertible Note Receivable, Term   2 years          
Convertible Notes Receivable, Conversion Price Per Share | $ / shares   $ 2.9103          
Convertible Notes Receivable, Premium   20.00%          
Gain On Disposal Of Non-Core Assets   $ 116,500          
Disposal Group, Cash To Be Received   119,460          
Proceeds from Divestiture of Interest in Consolidated Subsidiaries   60,000          
Notes Receivable, Amortized cost   59,460          
Disposal Group, Including Discontinued Operation, Assets   3,400          
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal 2,750            
Payments to Acquire Other Property, Plant, and Equipment 500            
Property, plant and equipment, held-for-sale $ 350            
Disposal Group, Including Discontinued Operation, Property, Plant And Equipment, Usage Period 20 years            
Convertible Notes Receivable, Conversion Limitation Per Transaction   $ 10,000          
Number of subsidiaries sold | subsidiary   3          
Disposal Group, Cash Due Prior To Closing   $ 6,000          
Disposal Group, Cash Due At Closing   $ 54,000          
Debt Instrument, Interest Rate, Stated Percentage   8.00%          
Release Of Restricted Cash             3,590
Land              
Property, Plant and Equipment [Line Items]              
Depreciation         1,650 100 $ 240
Mineral Properties [Domain]              
Property, Plant and Equipment [Line Items]              
Depreciation         $ 230 $ 210