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Investment in Ambler Metals LLC - Narrative (Details) |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 11, 2020 USD ($) Owner | May 31, 2026 USD ($) | May 31, 2025 USD ($) | May 31, 2026 USD ($) | May 31, 2025 USD ($) | Aug. 31, 2026 USD ($) | Nov. 30, 2025 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Comprehensive loss |  | $ 6,345,000 | $ 2,177,000 | $ 13,408,000 | $ 5,800,000 |  |
Ambler Metals LLC |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Percentage of ownership | 50.00% | 50.00% |  | 50.00% |  |  |
Comprehensive loss |  | $ 2,300,000 | $ 800,000 | $ 3,700,000 | 1,300,000 |  |
Joint venture equity contribution |  | 10,500,000 |  | 10,500,000 |  |  |
Number of board members | Owner | 4 |  |  |  |  |  |
Number of members appointed by Trilogy | Owner | 2 |  |  |  |  |  |
Maximum exposure to loss |  | 112,100,000 |  | 112,100,000 |  |  | $ 105,300,000
Ambler Metals LLC | Subsequent Event |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Contribution made to joint venture |  |  |  |  |  | $ 6,500,000 |
Joint venture equity contribution |  |  |  |  |  | $ 17,000,000 |
South32 |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Contribution made to joint venture | $ 145,000,000 |  |  |  |  |  |
South32 | Ambler Metals LLC |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Percentage of ownership | 50.00% |  |  |  |  |  |
Trilogy and South32 |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Contributed cash to Ambler Metals to fund its operations |  |  |  | 10,500,000 |  |  |
Ambler Metals |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Human resources and accounting services in connection with a service agreement |  |  |  | 17,800 | $ 105,200 |  |
Amount receivable |  | $ 4,600 |  | $ 4,600 |  |  |

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