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Investment in Ambler Metals LLC - Narrative (Details)		3 Months Ended		6 Months Ended
Investment in Ambler Metals LLC - Narrative (Details)	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