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v3.23.1

Investments (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jan. 31, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2022
Debt Securities, Available-for-sale [Abstract] |  |  |  |  |
Marketable Securities, Realized Gain (Loss) |  | $ (2,800) |  | $ (13,700) |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |
Current liabilities |  | 0 |  |  | $ 12,120
Marketable Securities, Current |  | 14,938 |  |  | 32,032
Equity securities |  |  |  |  | 44,152
Equity securities |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |
Cost |  | 25,408 |  |  | 95,968
Equity Securities, FV-NI, Unrealized Gain (Loss) |  | 0 | $ 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  | 10,470 | 51,816 |  |
Marketable Securities, Current |  | 14,938 |  |  |
Victoria Gold Corp | Equity securities |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |
Cost |  |  |  |  | 70,560
Equity Securities, FV-NI, Unrealized Gain (Loss) |  |  | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  |  | 38,528 |  |
Marketable Securities, Current |  |  |  |  | 32,032
Equity method investment, amount sold (in shares) | 6,000,000 |  |  |  |
Equity Method Investments, Sale of Stock, Price Per Share | $ 6.70 |  |  |  |
Proceeds from sale of equity method investments | $ 39,800 |  |  |  |
Integra Resources Corp. [Member] | Equity securities |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |
Cost |  | 9,455 |  |  | 9,455
Equity Securities, FV-NI, Unrealized Gain (Loss) |  | 0 | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  | 7,472 | 7,115 |  |
Current liabilities |  |  |  |  | 2,340
Marketable Securities, Current |  | 1,983 |  |  |
Avino Silver & Gold Mines Ltd | Equity securities |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |
Cost |  | 13,720 |  |  | 13,720
Equity Securities, FV-NI, Unrealized Gain (Loss) |  | 0 | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  | 1,260 | 4,199 |  |
Current liabilities |  |  |  |  | 9,521
Marketable Securities, Current |  | 12,460 |  |  |
Other Investments [Member] | Equity securities |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |
Cost |  | 2,233 |  |  | 2,233
Equity Securities, FV-NI, Unrealized Gain (Loss) |  | 0 | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  | 1,738 | $ 1,974 |  |
Current liabilities |  |  |  |  | $ 259
Marketable Securities, Current |  | $ 495 |  |  |

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