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Income Taxes - Significant Components of Temporary Differences, Unused Tax Credits and Unused Tax Losses (Detail) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Non-capital losses available for future periods [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Temporary Differences $ 96,732 $ 144,633
Expiry Date 2029 to 2043 2029 to 2042
Share issuance costs [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Temporary Differences $ 13,748 $ 7,156
Equipment [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Temporary Differences 460 911
Donations [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Temporary Differences $ 196 $ 153
Expiry Date 2024 to 2028 2023 to 2027