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Other Income and Expense (Tables) | 9 Months Ended
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Sep. 30, 2020
Other Income and Expenses [Abstract] |
Schedule of Other Nonoperating Income (Expense) | Other income (expense) net consisted of the following:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Gain on sale of membership interests in Comstock Mining LLC | $ | 18,275,846 |  |  | $ | — |  |  | $ | 18,275,846 |  |  | $ | — |
Change in estimated fair value of contingent forward asset | (647,502) |  |  | — |  |  | 765,880 |  |  | — |
Interest expense | (164,448) |  |  | (179,588) |  |  | (306,692) |  |  | (822,632) |
Other Income |  |  |  |  |  |  |
Interest income | 142,365 |  |  | 11,136 |  |  | 328,391 |  |  | 73,411 |
Mining lease income | 10,167 |  |  | 1,667 |  |  | 30,167 |  |  | 1,667 |
Realized gain on sale of shares of Tonogold common stock | 743,535 |  |  | — |  |  | 767,275 |  |  | — |
Change in estimated fair value of Tonogold CPS and common shares | (53,610) |  |  | (332,263) |  |  | 1,282,319 |  |  | (332,263) |
Change in estimated value of Tonogold note receivable | 256,000 |  |  | — |  |  | 256,000 |  |  | — |
Loss on early retirement of GF Comstock debenture | (51,433) |  |  | — |  |  | (51,433) |  |  | — |
Preferred shares issuance cost | — |  |  | — |  |  | — |  |  | (432,000) |
Make whole obligations | — |  |  | (517,558) |  |  | 162,711 |  |  | (417,341) |
Recognition of PPP proceeds | 67,624 |  |  | — |  |  | 261,170 |  |  | — |
Gain on sale of mineral rights and property, plant, and equipment | — |  |  | (6,250) |  |  | 100,000 |  |  |
Reimbursements from Tonogold | 84,944 |  |  | — |  |  | 234,944 |  |  | — |
Termination of Tonogold option agreement | — |  |  | 2,200,000 |  |  | — |  |  | 2,200,000 |
Final settlement of outstanding amounts due | 144,473 |  |  | — |  |  | 144,473 |  |  | — |
All other | 3,673 |  |  | 2,136 |  |  | 6,175 |  |  | 17,864 |
Total other income (expense) | 1,347,738 |  |  | 1,358,868 |  |  | 3,522,192 |  |  | 1,111,338 |
Total other income (expense), net | $ | 18,811,634 |  |  | $ | 1,179,280 |  |  | $ | 22,257,226 |  |  | $ | 288,706 |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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