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INVESTMENTS - Narrative (Details)
 12 Months Ended
Dec. 31, 2023
CAD ($)
Dec. 31, 2023
CAD ($)
Dec. 31, 2023
CAD ($)
Dec. 31, 2023
CAD ($)
lb
Dec. 31, 2023
CAD ($)
$ / lb
Dec. 31, 2023
CAD ($)
$ / lb
Dec. 31, 2023
CAD ($)
$ / shares
Dec. 31, 2023
CAD ($)
$ / shares
Dec. 31, 2022
CAD ($)
Dec. 31, 2023
USD ($)
Investments [Line Items]                    
Physical Uranium Holdings Cost $ 84,377,000 $ 84,377,000 $ 84,377,000 $ 84,377,000 $ 84,377,000 $ 84,377,000 $ 84,377,000 $ 84,377,000   $ 68,240,000
Physical uranium sold | lb       200,000            
Physical uranium hold | lb       2,300,000            
Weighted average price per pound of uranium sold         99.50 73.38        
Physical Uranium Holdings Cost Per Price | $ / shares             $ 29.67      
Purchase of investment-convertible debenture     15,000,000           $ 0  
Convertible Debentures                    
Investments [Line Items]                    
Purchase of investment-convertible debenture     15,000,000              
Investments, coupon rate   9.00%                
Investments, interest payment period 5 years                  
Investments, convertible to common shares, conversion price per share | $ / shares               $ 0.56    
Investments, interest payable in common shares, percent   33.33%                
Number of trading days considered for calculating volume weighted average share price 20 days                  
Fair value of Debentures $ 15,565,000 $ 15,565,000 15,565,000 $ 15,565,000 $ 15,565,000 $ 15,565,000 $ 15,565,000 $ 15,565,000    
Gain on fair value     $ 565,000