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Investment in Ambler Metals LLC - Narrative (Details)
3 Months Ended 12 Months Ended
Feb. 11, 2020
USD ($)
Owner
Feb. 28, 2026
USD ($)
Feb. 28, 2025
USD ($)
Nov. 30, 2025
USD ($)
Schedule of Equity Method Investments [Line Items]        
Comprehensive loss   $ 7,063,000 $ 3,623,000  
Ambler Metals LLC        
Schedule of Equity Method Investments [Line Items]        
Joint venture equity contribution   $ 2,500,000    
Percentage of ownership 50.00% 50.00%    
Comprehensive loss   $ 2,700,000   $ 1,200,000
Number of board members | Owner 4      
Number of members appointed by Trilogy | Owner 2      
Maximum exposure to loss   106,400,000   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   2,500,000    
Ambler Metals        
Schedule of Equity Method Investments [Line Items]        
Human resources and accounting services in connection with a service agreement   14,000   $ 46,000
Amount receivable   $ 1,160