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Note 1 - Organization and Business (Details Textual) $ in Millions |  |  | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 04, 2022 USD ($) | Dec. 17, 2021 USD ($) | Jun. 30, 2022 USD ($) a ft² | Mar. 31, 2022 a | Feb. 14, 2022 USD ($) | Oct. 01, 2020 | Sep. 30, 2020 | Sep. 29, 2020
The Joint Venture Company [Member] | State of Alaska Mining Claims for Exploration and Development [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 13,000 | 13,000 |  |  |  |
Contango Minerals [Member] | State of Alaska Mining Claims Located North and Northwest of Tetlin Lease [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 214,600 |  |  |  |  |
Contango Minerals [Member] | State of Alaska Mining Claims Located Near Eagle/Hona Property [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 139,100 |  |  |  |  |
Contango Minerals [Member] | State of Alaska Mining Claims Located Near Triple Z Property [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 14,800 |  |  |  |  |
Contango Minerals [Member] | State of Alaska Mining Claims Located in Richardson District [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 52,700 |  |  |  |  |
Contango Minerals [Member] | State of Alaska Mining Claims Located North and East of Lucky Shot Property [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 8,000 |  |  |  |  |
Tetlin Lease [Member] | The Joint Venture Company [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 675,000 |  |  |  |  |
Alaska Hard Rock Lease [Member] | Alaska Gold Torrent, LLC [Member] |  |  |  |  |  |  |  |
Area of Land (Acre) |  |  | 8,600 |  |  |  |  |
The Joint Venture Company [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 30.00% |  |  |  | 30.00% | 30.00%
Exploration Budget, Amount Spent | $ |  |  | $ 15.8 |  |  |  |  |
Area of Drilling Completed (Square Foot) | ft² |  |  | 33,000 |  |  |  |  |
Expected Cash Needed | $ |  | $ 47.9 |  |  |  |  |  |
Expected Spending Next Fiscal Year | $ |  |  |  |  | $ 26.0 |  |  |
The Joint Venture Company [Member] | KG Mining [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage by Other Owner |  |  |  |  |  |  | 70.00% |
The Joint Venture Company [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Expected Cash Needed | $ | $ 39.6 |  |  |  |  |  |  |
Equity Method Investment, Entity Shares of Expenditures, Amount | $ | $ 11.9 |  |  |  |  |  |  |
The Joint Venture Company [Member] | CORE Alaska [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 30.00% |
Percentage Ownership in Company |  |  |  |  |  | 30.00% |  |
The Joint Venture Company [Member] | KG Mining [Member] |  |  |  |  |  |  |  |
Percentage Ownership in Company |  |  |  |  |  | 70.00% |  |
The Joint Venture Company [Member] | Royal Alaska LLC [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 40.00% |
Royal Alaska LLC [Member] | KG Mining [Member] |  |  |  |  |  |  |  |
Percentage Ownership in Company |  |  |  |  |  |  | 100.00% |

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