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Subsequent Event - Additional Information (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2021
CAD ($)
shares
Dec. 31, 2020
Subsequent Events [Line Items]    
Number of share options exercised 10,020,001 7,490,999
Number of share options granted 17,400,000 9,555,000
Major ordinary share transactions [member]    
Subsequent Events [Line Items]    
Number of share options exercised 125,000  
Proceeds from exercise of stock options | $ $ 350  
Number of share options granted 94,227