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Amount of the required periodic payments including both interest and principal payments.

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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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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Investment in Ambler Metals LLC - Narrative (Details) - USD ($)		3 Months Ended		12 Months Ended
	Feb. 11, 2020	Feb. 28, 2022	Feb. 28, 2021	Nov. 30, 2021
Schedule of Equity Method Investments [Line Items]
Joint venture, contributed amount		$ 51,000
Comprehensive loss		(5,023,000)	$ (4,516,000)
Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Joint venture, contributed amount		$ 51,000
Percentage of ownership	50.00%	50.00%
Comprehensive loss		$ (3,800,000)		$ (2,200,000)
Fair value ascribed to Ambler Metals LLC interest				$ 160,063,000
South32 \| Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	50.00%
Loan repayments		2,400,000
Loan repayments, Interest		300,000
Loan repayments, principal		2,100,000
Upper Kobuk Mineral Projects \| South32
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	50.00%
Upper Kobuk Mineral Projects \| South32 \| Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Equity method investment contribution	$ 145,000,000
Ambler Metals
Schedule of Equity Method Investments [Line Items]
Joint venture, contributed amount		$ 51,000
Joint venture contribution (Shares)		31,469
Ambler Metals \| South32
Schedule of Equity Method Investments [Line Items]
Joint venture, contributed amount		$ 51,000
Percentage of ownership	50.00%