Schedule of Other Nonoperating Income (Expense) |
Other income (expense) net consisted of the following:
| | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2020 | | 2019 | | 2020 | | 2019 | Change in estimated fair value of contingent forward | $ | 351,091 |
| | $ | — |
| | $ | 1,413,382 |
| | $ | — |
| Interest expense | (91,656 | ) | | (181,907 | ) | | (142,244 | ) | | (643,045 | ) | | | | | | | | | Interest income | 179,558 |
| | 13,239 |
| | 186,026 |
| | 62,275 |
| Mining lease income | 10,000 |
| | — |
| | 20,000 |
| | — |
| Unrealized gain on Tonogold shares | 1,620,929 |
| | — |
| | 1,335,929 |
| | — |
| Realized gain on sale of Tonogold shares | 23,740 |
| | — |
| | 23,740 |
| | — |
| Preferred shares issuance cost | — |
| | (432,000 | ) | | — |
| | (432,000 | ) | Make whole obligations | 198,487 |
| | (34,946 | ) | | 162,711 |
| | 100,216 |
| Recognition of PPP proceeds | 193,546 |
| | — |
| | 193,546 |
| | — |
| Gain on sale of assets and mining claims | — |
| | 6,250 |
| | 100,000 |
| | 6,250 |
| Reimbursement from Tonogold | — |
| | — |
| | 150,000 |
| | — |
| All other | 1,228 |
| | 4,998 |
| | 2,502 |
| | 15,728 |
| Total other income (expense) | 2,227,488 |
| | (442,459 | ) | | 2,174,454 |
| | (247,531 | ) | Total other income (expense), net | $ | 2,486,923 |
| | $ | (624,366 | ) | | $ | 3,445,592 |
| | $ | (890,576 | ) |
|