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Investments (Tables) | 12 Months Ended
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Dec. 31, 2022
Investment in Marketable Securities [Abstract] |
Investments | The Company makes strategic investments in equity securities of silver and gold exploration, development and royalty and streaming companies.
| At December 31, 2022
In thousands | Cost |  | Gross Unrealized Losses |  | Gross Unrealized Gains |  | Estimated Fair Value
Equity Securities |  |  |  |  |  |  |
Victoria Gold Corp. | $ | 70,560 |  |  | $ | (38,528) |  |  | $ | — |  |  | $ | 32,032 |
Integra Resources Corp. | 9,455 |  |  | (7,115) |  |  | — |  |  | 2,340 |
Avino Silver & Gold Mines Ltd | 13,720 |  |  | (4,199) |  |  | — |  |  | 9,521 |
Other | 2,233 |  |  | (1,974) |  |  | — |  |  | 259 |
Equity securities | $ | 95,968 |  |  | $ | (51,816) |  |  | $ | — |  |  | $ | 44,152 |
| At December 31, 2021
In thousands | Cost |  | Gross Unrealized Losses |  | Gross Unrealized Gains |  | Estimated Fair Value
Equity Securities |  |  |  |  |  |  |
Victoria Gold Corp. | $ | 128,710 |  |  | $ | (4,499) |  |  | $ | — |  |  | $ | 124,211 |
Integra Resources Corp. | 9,455 |  |  | (1,469) |  |  | — |  |  | 7,986 |
Equity securities | $ | 138,165 |  |  | $ | (5,968) |  |  | $ | — |  |  | $ | 132,197 |

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