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Note 10 - Share Capital - Summary of Options Outstanding and Exercisable (Details)
12 Months Ended
Nov. 30, 2022
$ / shares
Nov. 30, 2021
$ / shares
Nov. 30, 2020
$ / shares
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 14,003,075 12,444,150 10,732,000
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.61 $ 1.63 $ 1.51
Options Outstanding Weighted Average Remaining Contractual Life (Year) 3 years 2 months 12 days    
Options Exercisable Number of Options Exercisable 9,955,070    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.61    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 2 years 6 months 25 days    
Share options one [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 1,837,500    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 0.79    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 1 year    
Options Exercisable Number of Options Exercisable 1,837,500    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 0.79    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 1 year    
Share options one [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 0.78    
Share options one [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 0.96    
Share options two [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 3,099,500    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.13    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 1 year 8 months 26 days    
Options Exercisable Number of Options Exercisable 2,889,500    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.11    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 1 year 6 months 14 days    
Share options two [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 0.97    
Share options two [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.57    
Share options three [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 4,145,500    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.60    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 4 years 11 months 23 days    
Options Exercisable Number of Options Exercisable 1,036,375    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.60    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 4 years 11 months 23 days    
Share options three [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.58    
Share options three [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.60    
Share options four [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 2,516,250    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.83    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 3 years 11 months 12 days    
Options Exercisable Number of Options Exercisable 1,885,000    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.83    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 3 years 11 months 12 days    
Share options four [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.61    
Share options four [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.83    
Share options five [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 2,404,325    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 2.67    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 2 years 11 months 4 days    
Options Exercisable Number of Options Exercisable 2,306,695    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 2.70    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 2 years 10 months 17 days    
Share options five [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.84    
Share options five [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 3.38