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Investments subject to significant influence | 3 Months Ended
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Mar. 31, 2026
Equity Method Investments and Joint Ventures [Abstract] |
Investments subject to significant influence | 6. Investments subject to significant influence: The Company’s principal investments subject to significant influence are its investment in Maaden Ivanhoe Electric Exploration and Development Limited Company ("Maaden Joint Venture") and VRB China. Others include its investments in Sama Resources Inc. (“Sama”).
| Equity Method |  | Carried at fair value |  |
| Maaden Joint Venture |  | VRB China |  | Other |  | Sama |  | Total
Balance at December 31, 2025 | $ | 8,227 |  |  | $ | 47,156 |  |  | $ | 827 |  |  | $ | 2,189 |  |  | $ | 58,399 |
Investment | 6,250 |  |  | — |  |  | — |  |  | — |  |  | 6,250 |
Change in fair value | — |  |  | — |  |  | — |  |  | 323 |  |  | 323 |
Share of (loss) income | (2,323) |  |  | (1,485) |  |  | 33 |  |  | — |  |  | (3,775) |
Foreign currency translation | — |  |  | (128) |  |  | (15) |  |  | — |  |  | (143) |
Balance at March 31, 2026 | $ | 12,154 |  |  | $ | 45,543 |  |  | $ | 845 |  |  | $ | 2,512 |  |  | $ | 61,054 |

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 323 -Publisher FASB -URI https://asc.fasb.org/323/tableOfContent + Details
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