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Note 8 - Acquisitions (Details Textual) | Aug. 06, 2024 USD ($) | Jul. 10, 2024 USD ($) $ / shares shares | May 01, 2024 USD ($) | Dec. 31, 2024 $ / shares | Dec. 31, 2023 $ / shares | May 09, 2023 $ / shares
--- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |  |
Common stock, par value per share | $ / shares |  |  |  | $ 0.01 | $ 0.01 | $ 0.01
Highgold Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Asset acquisition, total consideration |  | $ 35,000,000 |  |  |  |
Asset acquisition, consideration in shares |  | 33,800,000 |  |  |  |
Asset acquisition, consideration in direct transactions costs |  | $ 1,200,000 |  |  |  |
Avidian Gold Corp. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Asset acquisition, total consideration | $ 2,100,000 |  |  |  |  |
Asset acquisition, consideration in shares | 1,700,000 |  |  |  |  |
Asset acquisition, cash consideration | 400,000 |  |  |  |  |
Contingent payable | 1,000,000 |  |  |  |  |
Asset acquisition, liability recognized for deferred consideration | 0 |  |  |  |  |
Asset Acquisition, recognized amount for deferred consideration | 0 |  |  |  |  |
Asset acquisition, fair value | $ 0 |  |  |  |  |
HighGold Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Outstanding equity interests acquired |  |  | 100.00% |  |  |
Agreement date |  |  | May 01, 2024 |  |  |
HighGold Acquisition [Member] | Contango Shareholders [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shareholders ownership percentage |  | 85.90% |  |  |  |
Avidian Gold Corp. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Stock purchase agreement date |  |  | May 01, 2024 |  |  |
Percentage of Ownership Purchase |  |  | 100.00% |  |  |
Initial consideration |  |  | $ 2,400,000 |  |  |
Contingent payment |  |  | $ 1,000,000 |  |  |
Acquisition date | Aug. 06, 2024 |  |  |  |  |
Total equity value | $ 1,663,539 |  |  |  |  |
Shares withheld at closing | 207,945 |  |  |  |  |
Cash consideration | 400,000 |  |  |  |  |
Initial purchase price | 2,063,539 |  |  |  |  |
Contango Mining Canada Inc. [Member] | HighGold Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shareholders ownership percentage in combined company |  | 14.10% |  |  |  |
Deposit [Member] | Avidian Gold Corp. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration | 50,000 |  |  |  |  |
Due on Settlement of Withholding Contingency [Member] | Avidian Gold Corp. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shares to be paid upon settlement of withholding contingency | 150,000 |  |  |  |  |
Due on or Before the 6-month Anniversary [Member] | Avidian Gold Corp. [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash consideration | $ 200,000 |  |  |  |  |
Common Stock [Member] | HighGold Acquisition [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Exchange ratio |  | 0.019 |  |  |  |
Common stock, par value per share | $ / shares |  | $ 0.01 |  |  |  |
Shares issued | shares |  | 1,698,887 |  |  |  |
Value of share |  | $ 33,800,000 |  |  |  |

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