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Note 5 - Investment in Donlin Gold - Summary of the Company's Investment in Donlin Gold LLC (Details) - USD ($)
$ in Thousands
 12 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Nov. 30, 2021
Current assets: Cash, prepaid expenses, and other receivables $ 127,219 $ 152,538  
Current liabilities: Accounts payable, accrued liabilities and lease obligations (703) (769)  
Accretion     $ (39)
Income (Loss) from Equity Method Investments (18,529) (28,163) (16,625)
Donlin Gold [Member]      
Current assets: Cash, prepaid expenses, and other receivables 3,410 4,220  
Non-current assets: Right-of-use assets, property and equipment 1,456 2,036  
Non-current assets: Mineral property 32,615 32,615  
Current liabilities: Accounts payable, accrued liabilities and lease obligations (1,669) (2,322)  
Non-current liabilities: Reclamation and lease obligations (741) (701)  
Net assets 35,071 35,848  
Donlin Gold [Member]      
Balance – beginning of period 3,848 3,576 2,614
Mineral property expenditures (17,918) (27,690) (16,286)
Depreciation (571) (427) (300)
Accretion (40) (46)  
Funding 17,752 28,435 17,587
Balance – end of period $ 3,071 $ 3,848 $ 3,576