v3.26.1
Note 1 - Organization and Business (Details Textual)
$ in Millions
Dec. 31, 2025
USD ($)
a
Dec. 31, 2024
USD ($)
May 17, 2023
Sep. 30, 2020
State of Alaska Located Near Tidewater [Member] | Johnson Tract Project [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 21,000      
Contango Minerals [Member] | State of Alaska Mining Claims Located North and Northwest of Tetlin Lease [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 145,330      
Contango Minerals [Member] | State of Alaska Mining Claims Located Near Eagle/Hona Property [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 69,780      
Contango Minerals [Member] | State of Alaska Mining Claims Located Near Triple Z Property [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 14,850      
Contango Minerals [Member] | State of Alaska Mining Claims Located in Richardson District [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 52,700      
Contango Minerals [Member] | State of Alaska Mining Claims Located North and East of Lucky Shot Property [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 8,000      
Avidian Gold Alaska Inc. [Member] | State of Alaska Mining Claims and Upland Mining Leases [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 15,260      
Avidian Gold Alaska Inc. [Member] | Located in Fairbanks Mining District [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 1,030      
Avidian Gold Alaska Inc. [Member] | Valdez Creek Mining District on Eastern Edge of Alaska Range [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 10,850      
Avidian Gold Alaska Inc. [Member] | State of Alaska Mining Claims, Leasehold Locations And Upland Mining Lease Located In Fairbanks Mining District [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 3,380      
Alaska Hard Rock Lease [Member] | Alaska Gold Torrent, LLC [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 8,600      
Peak Gold, LLC [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 30.00%   30.00%  
Peak Gold, LLC [Member] | KG Mining [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage       30.00%
The Joint Venture Company [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 30.00%      
Exploration Budget, Funded Amount | $ $ 78.6 $ 78.6    
The Joint Venture Company [Member] | KG Mining [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 70.00%      
The Joint Venture Company [Member] | State of Alaska Mining Claims for Exploration and Development [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 13,000      
The Joint Venture Company [Member] | Tetlin Lease [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Area of Land (Acre) 675,000      
HighGold Mining Inc. [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 100.00%      
JT Mining, Inc. [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 100.00%      
Royal Alaska, LLC [Member] | KG Mining [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 100.00%      
Royal Gold [Member] | Peak Gold, LLC [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 40.00%      
CORE Alaska, LLC [Member] | Peak Gold, LLC [Member]        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Equity Method Investment, Ownership Percentage 30.00%