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Note 6 - Long-term Investments - Weighted Average Assumptions of NevGold Warrants (Details) - NevGold warrants [member]
12 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Statement Line Items [Line Items]    
Risk-free interest rate 4.20% 0.00%
Expected life (years) (Year) 1 year 7 days  
Expected volatility 58.28% 0.00%
Estimated dividend yield 0.00% 0.00%