Investment in Ambler Metals LLC - Narrative (Details)		3 Months Ended		6 Months Ended
	Feb. 11, 2020 USD ($) Owner	May 31, 2024 USD ($) shares	May 31, 2023 USD ($)	May 31, 2024 USD ($) shares	May 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 10, 2024 USD ($)	Nov. 30, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Cash and cash equivalents		$ 14,022,000		$ 14,022,000				$ 2,590,000
Loss for the year		(1,759,000)	$ (2,803,000)	(5,360,000)	$ (7,875,000)
Investment in Ambler Metals		121,238,000		121,238,000				135,021,000
Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Joint venture, contributed amount		112,000		112,000
Contribution made to joint venture		$ 112,000		$ 112,000
Joint venture contribution made in common shares | shares		143,507		143,507
Percentage of ownership	50.00%	50.00%		50.00%
Cash and cash equivalents							$ 12,500,000
Cash returned		$ 25,000,000		$ 25,000,000
Loss for the year		(600,000)	$ (1,600,000)	(1,400,000)	(3,100,000)
Number of board members | Owner	4
Number of members appointed by Trilogy | Owner	2
Investment in Ambler Metals		121,238,000		121,238,000
Maximum exposure to loss		121,200,000		121,200,000
Fair value ascribed to Ambler Metals LLC interest								$ 135,021,000
South32 | Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Contribution made to joint venture		$ 112,000		$ 112,000
Percentage of ownership	50.00%	50.00%		50.00%
Ambler Metals
Schedule of Equity Method Investments [Line Items]
Human resources and accounting services in connection with a service agreement				$ 25,000	0
Operating expenses				$ 52,000	$ 0
South32
Schedule of Equity Method Investments [Line Items]
Contribution made to joint venture	$ 145,000,000.0
Subsequent Event [Member] | Ambler Metals LLC
Schedule of Equity Method Investments [Line Items]
Cash returned						$ 25,000,000