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Lease Liabilities - Summary of quantitative information about lease liabilities (Detail) - CAD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Quantitative Information About Lease Liabilities [Line Items]              
Balance, January 1     $ 57,014 $ 61,926 $ 61,926 $ 67,000  
Additions     2,940   9,721 8,065  
Lease interest $ 666 $ 757 1,361 $ 1,550 3,029 3,371 $ 2,586
Payments made against lease liabilities     (8,692)   (17,244) (16,141)  
Currency translation effects and other     338   (418) (369)  
Current portion of lease liabilities 13,127   13,127   13,906 14,693  
Non-current portion of lease liabilities 39,834   39,834   43,108 47,233  
Closing balance $ 52,961   $ 52,961   $ 57,014 $ 61,926 $ 67,000