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Note 4 - Long-term Investments - Changes in Long-term Investments (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Jun. 13, 2022
Nov. 30, 2022
Nov. 30, 2021
Nov. 30, 2020
Statement Line Items [Line Items]        
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares)       20,000,000
Investment, fair value   $ 77,839 $ 130,090 $ 0
Increase (decrease) through equity investments designated at fair value through other comprehensive income     8,689 $ 120,833
Other comprehensive income, net of tax, unrealized gains (losses) from long-term investments   $ (60,940) $ 9,257  
Number of shares (in shares)       20,000,000
Gold Royalty Corp [member]        
Statement Line Items [Line Items]        
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares)   1,178,659 21,178,659 20,000,000
Investment, fair value   $ 75,557 $ 130,090 $ 0
Increase (decrease) through equity investments designated at fair value through other comprehensive income   5,200 5,200 $ 120,833
Other comprehensive income, net of tax, unrealized gains (losses) from long-term investments   $ (59,733) $ 9,257  
Number of shares (in shares)   1,178,659 21,178,659 20,000,000
NevGold Corp [member]        
Statement Line Items [Line Items]        
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares) 1,481,481 1,481,481 5,925,925  
Investment, fair value   $ 2,282 $ 0  
Increase (decrease) through equity investments designated at fair value through other comprehensive income $ 1,000 1,000 $ 3,489  
Other comprehensive income, net of tax, unrealized gains (losses) from long-term investments   $ (1,207)    
Number of shares (in shares) 1,481,481 1,481,481 5,925,925