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Note 13 - Financial Instruments (Details Textual)
$ / shares in Units, shares in Thousands, $ in Thousands, $ in Millions
 12 Months Ended
Nov. 30, 2022
CAD ($)
shares
Nov. 30, 2022
USD ($)
$ / shares
shares
Mar. 11, 2021
shares
Statement Line Items [Line Items]      
Gains (losses) in other comprehensive income (loss) on change in value of reported currency in 10% change $ 6,536    
Gains (losses) on change in value of reported currency in 10% change 486    
Working capital 1,791    
Gains (losses) in other comprehensive income (loss) on change in value of equity prices of long-term investment in 10% change $ 6,733    
Gold Royalty Corp [member]      
Statement Line Items [Line Items]      
Non-controlling investment, number of shares (in shares) | shares 21,180 21,180 20,000
Share price (in CAD per share) | $ / shares   $ 2.66  
Total investment accounted for as measured through fair value through other comprehensive income   $ 56.3  
Dividends received $ 802    
NevGold [member]      
Statement Line Items [Line Items]      
Non-controlling investment, number of shares (in shares) | shares 5,930 5,930  
Total investment accounted for as measured through fair value through other comprehensive income $ 2,300    
Currency risk, denominated in USD [member]      
Statement Line Items [Line Items]      
Foreign currency denominated monetary liabilities $ 9,792