Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member]	Aug. 24, 2021 USD ($) oz	Aug. 16, 2021 shares
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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Amount of mineral resource used to determine the contingent consideration in a business combination.

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