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Investments in Associates - Summarized Financial Information in Associate 100% Basis and Adjustments (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of associates [line items] |  |
Depletion | $ (59,780) | $ (35,704)
Administration expenses | (13,394) | (10,198)
Other (expense) income | 33 | (68)
Company's share of net loss of associate | (3,654) | $ (943)
Sandbox Royalties Corp [member] |  |
Disclosure of associates [line items] |  |
Revenue | 355 |
Depletion | (267) |
Administration expenses | (272) |
Other (expense) income | (1,341) |
Total net loss | (1,525) |
Company's share of net loss of associate | (307) |
Horizon Copper Corp [member] |  |
Disclosure of associates [line items] |  |
Revenue | 0 |
Administration expenses | (666) |
Other (expense) income | (5,582) |
Total net loss | (6,248) |
Company's share of net loss of associate | $ (2,124) |

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