v3.25.2
MINERAL PROPERTIES (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended 12 Months Ended 27 Months Ended
Jan. 04, 2024
Aug. 21, 2023
May 12, 2023
Jan. 13, 2023
Nov. 22, 2023
Apr. 18, 2023
May 16, 2022
Mar. 18, 2022
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
May 31, 2015
Dec. 01, 2024
Nov. 15, 2024
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Payments to acquire mineral rights                 $ 356   $ 486        
MacArthur, Yerington and Wassuk properties [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Ownership interest                 100.00%            
Bear Properties [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Ownership option                 100.00%            
Nuton LLC [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Ownership interest                 100.00%            
Salaries                 $ 617 $ 509          
Water rights-related legal and other professional fees                 764 486          
General administration expenses                 721 395          
Nuton LLC [Member] | Option to Earn-in Agreement [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Feasibility study               $ 50,000              
Option to earn interest in assets               65.00%              
Exclusive earn in options                 28,000            
Nuton LLC [Member] | Option to Earn-in Agreement [Member] | Work program stage one [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Development costs             $ 4,000                
Nuton LLC [Member] | Option to Earn-in Agreement [Member] | Work program stage two [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Exclusive earn in options                             $ 5,000
Development costs       $ 5,000                      
Nuton LLC [Member] | Option to Earn-in Agreement [Member] | Work program stage three [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Development costs $ 11,500     $ 2,500                      
Nuton LLC [Member] | Option to Earn-in Agreement [Member] | Work program stage two B [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Exclusive earn in options                             $ 3,160
Nuton LLC [Member] | Advanced From Stage 3 [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Exclusive earn in options                 19,000            
Development costs                 50,000            
Proceed with addtional amount                 31,000            
Advance payment                 $ 19,000            
MacArthur Project [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Net smelter return royalty                 2.00%            
Potential net smelter return royalty in exchange for consideration                 1.00%            
Consideration required for decreased net smelter return royalty                 $ 1,000            
Total lifetime royalty is capped                 7,500            
Bear Deposit [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Net smelter return royalty                         2.00%    
Potential net smelter return royalty in exchange for consideration                         1.00%    
Consideration required for decreased net smelter return royalty                         $ 1,250    
Ownership option                         100.00%    
Option agreement, obligated cash payments                         $ 6,318    
Payments to acquire mineral rights                         $ 5,765    
Option agreement, obligated cash payments next year                 100            
Option agreement, obligated cash payments next two years                 201            
Option agreement, obligated cash payments next three years                 101            
Option agreement, obligated cash payments next four years                 50            
Option agreement, obligated cash payments next five years                 553            
Bear Deposit [Member] | Minimum [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Option agreement, obligated cash payments                 250            
Bear Deposit [Member] | Maximum [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Option agreement, obligated cash payments                 $ 22,770            
Wassuk [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Net smelter return royalty                 3.00%            
Potential net smelter return royalty in exchange for consideration                 2.00%            
Consideration required for decreased net smelter return royalty                 $ 1,500            
Copper Canyon [Member] | Convergent Mining, LLC [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Exploration expenditures   $ 2,000                          
Consideration transferred   $ 10                          
Fees and reimburse convergent percent   5.00%                          
Maximum exploration costs   $ 100                          
Falcon Copper Corp [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Evaluation expenditures                 22 $ 2          
Falcon Copper Corp [Member] | Blue Copper [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Cash payment           $ 200                  
Payment for the Freedom and Cyclone claims     $ 60                        
Payments to acquire mineral rights                 $ 225   150        
Advance rental payment                     $ 150        
Falcon Copper Corp [Member] | Cabin Property [Member]                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Description of exploration and evaluation activities                       9,000 acres      
Falcon Copper Corp [Member] | Cabin Property [Member] | Joint Venture Agreement                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Exploration expenditures         $ 1,000                    
Option agreement, expenditure commitment         70.00%                    
Falcon Copper Corp [Member] | Muncy Property [Member] | Joint Venture Agreement                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Ownership interest         100.00%                    
Net smelter return royalty         2.00%                    
Exploration expenditures         $ 1,500                    
Consideration required for decreased net smelter return royalty         $ 10,000                    
Option agreement, expenditure commitment         70.00%                    
Option agreement, obligated cash payments         $ 95                 $ 105  
Option agreement, obligated cash payments next year                           50  
Option agreement, obligated cash payments next two years                           $ 60  
Falcon Copper Corp [Member] | Muncy Property [Member] | Minimum [Member] | Joint Venture Agreement                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Potential net smelter return royalty in exchange for consideration         1.00%                    
Falcon Copper Corp [Member] | Muncy Property [Member] | Maximum [Member] | Joint Venture Agreement                              
Oil and Gas, Cost Incurred, Property Acquisition, Exploration, and Development [Line Items]                              
Potential net smelter return royalty in exchange for consideration         2.00%