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Note 4 - Long-term Investments (Details Textual)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 13, 2022
CAD ($)
$ / shares
shares
Nov. 05, 2021
CAD ($)
Mar. 11, 2021
CAD ($)
$ / shares
shares
Nov. 30, 2022
CAD ($)
Nov. 30, 2022
CAD ($)
shares
Nov. 30, 2021
CAD ($)
shares
Nov. 30, 2020
CAD ($)
shares
Nov. 30, 2022
$ / shares
shares
Oct. 27, 2022
shares
Jul. 27, 2022
shares
Oct. 28, 2021
shares
Mar. 11, 2021
$ / shares
shares
Statement Line Items [Line Items]                        
Other comprehensive income, net of tax, unrealized gains (losses) from long-term investments         $ (60,940) $ 9,257            
Other comprehensive income, deferred tax recovery (expense) on long-term investments         8,227 (1,250)            
Reclassification adjustments on exchange differences on translation, net of tax         (0) (857)            
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares) | shares             20,000,000          
Increase (decrease) through equity investments designated at fair value through other comprehensive income           8,689 $ 120,833          
Margin loan facility [member]                        
Statement Line Items [Line Items]                        
Borrowings, securities pledged as collateral, shares (in shares) | shares                 20,700,000 20,700,000 20,000,000  
GRC [member]                        
Statement Line Items [Line Items]                        
Share price (in CAD per share) | (per share)     $ 5.92                 $ 4.72
Gold Royalty Corp [member]                        
Statement Line Items [Line Items]                        
Other comprehensive income, net of tax, unrealized gains (losses) from long-term investments         $ (59,733) 9,257            
Gain (loss) on fair value remeasurement of investment   $ 5,452 $ 118,201                  
Non-controlling investment, number of shares (in shares) | shares     20,000,000         21,180,000       20,000,000
Share price (in CAD per share) | $ / shares               $ 2.66        
Gain (loss) on ownership dilution           $ 5,169            
Investment in associate, amount derecognized   114,524                    
Gain (loss) on loss of significant influence over investment   6,309                    
Reclassification adjustments on exchange differences on translation, net of tax   (857)                    
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares) | shares         1,178,659 21,178,659 20,000,000          
Increase (decrease) through equity investments designated at fair value through other comprehensive income         $ 5,200 $ 5,200 $ 120,833          
Gold Royalty Corp [member] | Margin loan facility [member]                        
Statement Line Items [Line Items]                        
Borrowings, securities pledged as collateral, shares (in shares) | shares               20,700,000        
Gold Royalty Corp [member] | Entity [member]                        
Statement Line Items [Line Items]                        
Investment in equity securities, fair value   $ 120,833                    
NevGold Corp [member]                        
Statement Line Items [Line Items]                        
Other comprehensive income, net of tax, unrealized gains (losses) from long-term investments         $ (1,207)              
Share price (in CAD per share) | $ / shares $ 0.675                      
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares) | shares 1,481,481       1,481,481 5,925,925            
Increase (decrease) through equity investments designated at fair value through other comprehensive income $ 1,000       $ 1,000 $ 3,489            
Number of common shares receipt (in shares) | shares         4,444,444              
Common shares receipt, fair value       $ 2,489 $ 2,489              
NevGold Corp [member] | Almaden project [member]                        
Statement Line Items [Line Items]                        
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares) | shares         5,925,925              
Equity investment designated at fair value through other comprehensive income, percentage         10.50%