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Other Investments (Tables) | 12 Months Ended
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Dec. 31, 2020
Other Investments |
Summary of investment in Midas Gold Shares | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2020 |  | December 31, 2019 | ​
Fair value at beginning of period | ​ | $ | 3,676 | ​ | $ | 5,462 | ​
Midas Gold Shares sold | ​ | ​ | (5,788) | ​ | ​ | (415) | ​
Nusantara Resources shares | ​ | ​ | — | ​ | ​ | 272 | ​
Unrealized gain/(loss) | ​ | ​ | 2,405 | ​ | ​ | (1,643) | ​
Fair value at end of period | ​ | $ | 293 | ​ | $ | 3,676 | ​

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References No definition available. + Details
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