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Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member] | Aug. 24, 2021 USD ($) oz | Aug. 16, 2021 shares
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Promissory Note Issued with AGT Acquisition [Member] | Measurement Input, Discount Rate [Member] |  |
Long-term Debt, Measurement Input | 10 |
Alaska Gold Torrent, LLC [Member] |  |
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% |
Business Combination, Consideration Transferred, Total | $ 30,000,000 |
Payments to Acquire Businesses, Gross | 5,000,000 |
Payments to Acquire Businesses, Net of Tax | 3.80 |
Business Combination, Withholding Tax | 1,300,000 |
Business Acquisitions, Purchase Price Allocation, Working Capital Adjustments | 100,000 |
Alaska Gold Torrent, LLC [Member] | Lucky Shot Prospect [Member] |  |
Business Combination, Exploration Expenditures, Requirement, Minimum Amount During 18 Months Period | 5,000,000 |
Business Combination, Exploration Expenditures, Requirement, Minimum Amount During 36 Months Period | 10,000,000 |
Alaska Gold Torrent, LLC [Member] | Lucky Shot Prospect [Member] | Minimum [Member] |  |
Business Combination, Exploration Expenditures, Requirement, Additional Amount | 5,000,000 |
Business Combination, Exploration Expenditures, Requirement, Aggregate Amount | $ 15,000,000 |
Alaska Gold Torrent, LLC [Member] | Production Threshold, One [Member] |  |
Business Combination, Contingent Consideration Arrangements, Production Threshold, Mineral Resource (Ounce) | oz | 500,000 |
Business Combination, Contingent Consideration Arrangements, Production Threshold, Output, Gold (Ounce) | oz | 30,000 |
Gold to Silver Ratio | 1:65 |
Alaska Gold Torrent, LLC [Member] | Production Threshold, One [Member] | Common Stock [Member] |  |
Business Combination, Consideration Transferred, Liabilities Incurred | $ 3,750,000 |
Alaska Gold Torrent, LLC [Member] | Production Threshold, One [Member] | Cash [Member] |  |
Business Combination, Consideration Transferred, Liabilities Incurred | $ 5,000,000 |
Alaska Gold Torrent, LLC [Member] | Production Threshold, Two [Member] |  |
Business Combination, Contingent Consideration Arrangements, Production Threshold, Mineral Resource (Ounce) | oz | 1,000,000 |
Business Combination, Contingent Consideration Arrangements, Production Threshold, Output, Gold (Ounce) | oz | 30,000 |
Alaska Gold Torrent, LLC [Member] | Production Threshold, Two [Member] | Common Stock [Member] |  |
Business Combination, Consideration Transferred, Liabilities Incurred | $ 5,000,000 |
Alaska Gold Torrent, LLC [Member] | Production Threshold, Two [Member] | Cash [Member] |  |
Business Combination, Consideration Transferred, Liabilities Incurred | 5,000,000 |
Alaska Gold Torrent, LLC [Member] | Promissory Note Issued with AGT Acquisition [Member] |  |
Business Combination, Consideration Transferred, Liabilities Incurred | $ 6,250,000 |
Share-based Payment Arrangement, Employee [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) | shares |  | 10,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 3 years

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