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Note 8 - Investment in Peak Gold, LLC (Tables) | 12 Months Ended
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Jun. 30, 2018
Notes Tables |
Roll-forward of Equity Method Investment [Table Text Block] |
|  | Investment |
|  | in Peak Gold, LLC |
Investment balance at June 30, 2014 |  | $ | — |
Investment in Peak Gold, LLC, at Inception January 8, 2015 |  |  | 1,433,886 |
Loss from equity investment in Peak Gold, LLC |  |  | (1,433,886 | )
Investment balance at June 30, 2015 |  | $ | — |
Investment in Peak Gold, LLC |  |  | — |
Loss from equity investment in Peak Gold, LLC |  |  | — |
Investment balance at June 30, 2016 |  | $ | — |
Investment in Peak Gold, LLC |  |  | — |
Loss from equity investment in Peak Gold, LLC |  |  | — |
Investment balance at June 30, 2017 |  | $ | — |
Investment in Peak Gold, LLC |  |  | 2,580,000 |
Loss from equity investment in Peak Gold, LLC |  |  | (2,580,000 | )
Investment balance at June 30, 2018 |  | $ | — |
The Joint Venture Company [Member] |
Notes Tables |
Summarized Balance Sheet of Equity Method Investment [Table Text Block] |
|  | June 30, 2018 |  |  | June 30, 2017 |
ASSETS |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 2,628,195 |  |  | $ | 58,955 |
Mineral properties |  |  | 1,433,886 |  |  |  | 1,433,886 |
TOTAL ASSETS |  | $ | 4,062,081 |  |  | $ | 1,492,841 |
LIABILITIES AND MEMBERS' (DEFICIT) EQUITY |  |  |  |  |  |  |  |
Accounts payable and other liabilities |  | $ | 2,403,257 |  |  | $ | 1,754,009 |
TOTAL LIABILITIES |  |  | 2,403,257 |  |  |  | 1,754,009 |
MEMBERS' (DEFICIT) EQUITY |  |  | 1,658,824 |  |  |  | (261,168 | )
TOTAL LIABILITIES AND MEMBERS' (DEFICIT) EQUITY |  | $ | 4,062,081 |  |  | $ | 1,492,841 |
Summarized Income Statement of Equity Method Investment [Table Text Block] |
|  | Year Ended |  |  | Year Ended |  |  | Period from Inception January 8, 2015 to |
|  | June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2018 |
EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |
Exploration expense |  | $ | 7,652,107 |  |  | $ | 11,326,289 |  |  | $ | 28,510,255 |
General and administrative |  |  | 1,741,791 |  |  |  | 2,034,507 |  |  |  | 5,578,697 |
Total expenses |  |  | 9,393,898 |  |  |  | 13,360,796 |  |  |  | 34,088,952 |
NET LOSS |  | $ | 9,393,898 |  |  | $ | 13,360,796 |  |  | $ | 34,088,952 |

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