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Investments (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 28, 2022 | Mar. 21, 2022 | Jan. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale [Abstract] |  |  |  |  |  |  |
Marketable Securities, Realized Gain (Loss) |  |  |  |  | $ (47,900) | $ (10,400) | $ (16,200)
Equity securities |  |  |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |  |  |
Cost |  |  |  |  | 95,968 | 138,165 |
Equity Securities, FV-NI, Unrealized Gain (Loss) |  |  |  | $ 0 | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  |  |  | 5,968 | 51,816 |  |
Current liabilities |  |  |  |  | 44,152 | 132,197 |
Victoria Gold Corp | Equity securities |  |  |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |  |  |
Cost |  |  |  |  | 70,560 | 128,710 |
Equity Securities, FV-NI, Unrealized Gain (Loss) |  |  |  | 0 | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  |  |  | 4,499 | 38,528 |  |
Current liabilities |  |  |  |  | 32,032 | 124,211 |
Equity method investment, amount sold (in shares) | 5,000,000 |  |  |  |  |  |
Equity Method Investments, Sale of Stock, Price Per Share | $ 8.34 |  |  |  |  |  |
Proceeds from sale of equity method investments | $ 40,500 |  |  |  |  |  |
Equity method investment, realized loss on disposal | $ 15,600 |  |  |  |  |  |
Victoria Gold Corp | Equity securities | Subsequent Event |  |  |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |  |  |
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 |  |  |  | $ 1,469 | 7,115 |  |
Current liabilities |  |  |  |  | 2,340 | $ 7,986 |
Avino Silver & Gold Mines Ltd | Equity securities |  |  |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |  |  |
Shares purchased during period, shares |  | 14,000,000 |  |  |  |  |
Investment owned, percent of assets |  | 12.00% |  |  |  |  |
Cost |  |  |  |  | 13,720 |  |
Equity Securities, FV-NI, Unrealized Gain (Loss) |  |  |  |  | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  |  |  |  | 4,199 |  |
Current liabilities |  |  |  |  | 9,521 |  |
Other Investments [Member] | Equity securities |  |  |  |  |  |  |
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |  |  |  |
Cost |  |  |  |  | 2,233 |  |
Equity Securities, FV-NI, Unrealized Gain (Loss) |  |  |  |  | 0 |  |
Equity Securities, FV-NI, Unrealized Gain |  |  |  |  | 1,974 |  |
Current liabilities |  |  |  |  | $ 259 |  |

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