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Note 11 - Share Capital - Summary of Options Outstanding and Exercisable (Details)
 12 Months Ended
Nov. 30, 2021
$ / shares
Nov. 30, 2020
$ / shares
Nov. 30, 2019
$ / shares
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 12,444,150 10,732,000 12,463,000
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.63 $ 1.51 $ 1.15
Options Outstanding Weighted Average Remaining Contractual Life (Year) 2 years 8 months 19 days    
Options Exercisable Number of Options Exercisable 9,779,150    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.53    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 2 years 2 months 12 days    
Share options one [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 1,787,500    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 0.78    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 1 year 11 months 26 days    
Options Exercisable Number of Options Exercisable 1,787,500    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 0.78    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 1 year 11 months 26 days    
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) $ 0.84    
Share options two [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 2,224,500    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.05    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 2 years 8 months 15 days    
Options Exercisable Number of Options Exercisable 2,224,500    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.05    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 2 years 8 months 15 days    
Share options two [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 0.85    
Share options two [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.05    
Share options three [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 3,455,000    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.59    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 10 months 17 days    
Options Exercisable Number of Options Exercisable 3,380,000    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.59    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 9 months 14 days    
Share options three [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.06    
Share options three [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.72    
Share options four [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 2,745,000    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 1.83    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 4 years 9 months 21 days    
Options Exercisable Number of Options Exercisable 746,250    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 1.82    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 4 years 5 months 12 days    
Share options four [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.73    
Share options four [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.84    
Share options five [member]      
Statement Line Items [Line Items]      
Options Outstanding Number of Options Outstanding 2,232,150    
Options Outstanding Weighted Average Exercise Price (in CAD per share) $ 2.74    
Options Outstanding Weighted Average Remaining Contractual Life (Year) 3 years 7 months 2 days    
Options Exercisable Number of Options Exercisable 1,640,900    
Options Exercisable Weighted Average Exercise Price (in CAD per share) $ 2.76    
Options Exercisable Weighted Average Remaining Contractual Life (Year) 3 years 7 months 13 days    
Share options five [member] | Bottom of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 1.85    
Share options five [member] | Top of range [member]      
Statement Line Items [Line Items]      
Exercise Prices (in CAD per share) $ 3.38