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Note 11 - Investment in Peak Gold, LLC - Roll-forward of Investment in the Joint Venture Company (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
Investment balance | $ 0 |  |  |  |  |  |  |
Investment in Peak Gold, LLC | 3,706,000 | $ 3,861,252 |  |  |  |  |  |
Loss from equity investment in Peak Gold, LLC | (3,706,000) | (3,861,252) |  |  |  |  |  |
The Joint Venture Company [Member] |  |  |  |  |  |  |  |
Investment balance | 0 | 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0
Investment in Peak Gold, LLC | 3,706,000 | 3,861,252 | 3,720,000 | 4,140,000 | 2,580,000 | 0 | 0 | 1,433,886
Loss from equity investment in Peak Gold, LLC | $ (3,706,000) | $ (3,861,252) | $ (3,720,000) | $ (4,140,000) | $ (2,580,000) | $ 0 | $ 0 | $ (1,433,886)

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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(10)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8813-108599 + Details
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