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Non-controlling Interests - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
CAD ($)
shares
Dec. 31, 2020
CAD ($)
shares
Dec. 31, 2021
$ / shares
Disclosure of noncontrolling interests [line items]      
Non-controlling interests $ 27,740 $ 25,001  
The subsidiaries with the exception of isoEnergy [member]      
Disclosure of noncontrolling interests [line items]      
Proportion of ownership interest in subsidiary 100.00%    
IsoEnergy Ltd. [member]      
Disclosure of noncontrolling interests [line items]      
Proportion of ownership interest in subsidiary 51.00% 51.00%  
Increase Decrease Through Warrants Exercised | shares 5,223,689 0  
Class Of Warrants Exercise Price Per Share | $ / shares     $ 0.60
Proceeds from exercise of warrants $ 3,134 $ 0  
Non-controlling interests $ 27,740 $ 25,001