v3.26.3
Investment in Ambler Metals LLC - Financial information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Nov. 30, 2025
Carrying value of investment in Ambler Metals          
Investment in Ambler Metals, Beginning     $ 105,263    
Share of loss on equity investment $ (9,557) $ (891) (13,234) $ (2,236)  
Investment in Ambler Metals, Ending 109,029   109,029    
Assets [Abstract]          
Cash and cash equivalents 31,209   31,209   $ 51,613
Total assets 140,754   140,754   157,304
Liabilities [Abstract]          
Total liabilities 23,912   23,912   33,183
Equity Method Investment, Nonconsolidated Investee or Group of Investees          
Assets [Abstract]          
Cash and cash equivalents 14,833   14,833   3,507
Mineral properties 30,899   30,899   30,899
Other assets 3,530   3,530   1,303
Total assets 49,262   49,262   35,709
Liabilities [Abstract]          
Accounts payable and accrued liabilities 6,674   6,674   961
Other liabilities 324   324   16
Total liabilities 6,998   6,998   977
Members' equity (total assets less total liabilities) 42,264   42,264   $ 34,732
Operating Income (Loss) [Abstract]          
Project costs     22,291    
Corporate costs     4,069    
Other items     108    
Comprehensive loss     26,468    
Ambler Metals LLC          
Carrying value of investment in Ambler Metals          
Investment in Ambler Metals, Beginning     105,263    
Joint venture equity contribution 17,000   17,000    
Share of loss on equity investment     (13,234)    
Investment in Ambler Metals, Ending $ 109,029   $ 109,029