Represents the number of board members.

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Represents the number of board members appointed by the company.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available.

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The amount of capital contributed by the limited partners.

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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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 ($) Owner	Aug. 31, 2023 USD ($) shares	Aug. 31, 2022 USD ($)	Aug. 31, 2023 USD ($) shares	Aug. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Comprehensive (loss) earnings for the year		$ (4,052,000)	$ (9,938,000)	$ (11,927,000)	$ (19,035,000)
Investment in Ambler Metals		136,867,000		136,867,000		$ 142,754,000
Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Joint venture, contributed amount		111,000		111,000
Contribution made to joint venture		$ 111,000		$ 111,000
Joint venture contribution made in common shares \| shares		143,505		143,505
Percentage of ownership	50.00%	50.00%		50.00%
Comprehensive (loss) earnings for the year		$ (5,800,000)	$ (17,900,000)	$ (12,000,000.0)	$ (26,600,000)
Number of board members \| Owner	4
Number of members appointed by Trilogy \| Owner	2
Investment in Ambler Metals	$ 176,000,000	136,867,000		136,867,000
Maximum exposure to loss		136,900,000		136,900,000
Fair value ascribed to Ambler Metals LLC interest						$ 142,754,000
South32 \| Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Contribution made to joint venture		$ 111,000		$ 111,000
Percentage of ownership	50.00%	50.00%		50.00%
South32
Schedule of Equity Method Investments [Line Items]
Contribution made to joint venture	$ 145,000,000