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Investment in Ambler Metals LLC - Narrative (Details)		3 Months Ended		9 Months Ended
Investment in Ambler Metals LLC - Narrative (Details)	Feb. 11, 2020 USD ($) Owner	Aug. 31, 2026 USD ($)	Aug. 31, 2025 USD ($)	Aug. 31, 2026 USD ($)	Aug. 31, 2025 USD ($)	Nov. 30, 2025 USD ($)
Schedule of Equity Method Investments [Line Items]
Comprehensive loss		$ (244,000)	$ 1,747,000	$ 13,164,000	$ 7,547,000
Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	50.00%	50.00%		50.00%
Comprehensive loss		$ 9,600,000	$ 900,000	$ 13,200,000	2,200,000
Number of board members \| Owner	4
Number of members appointed by Trilogy \| Owner	2
Maximum exposure to loss		109,000,000		109,000,000		$ 105,300,000
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				17,000,000
Ambler Metals
Schedule of Equity Method Investments [Line Items]
Human resources and accounting services in connection with a service agreement				17,800	$ 102,250
Amount receivable		$ 0		$ 0