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Income Tax - Additional Information (Detail) - CAD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Text Block [Abstract]          
Deductible temporary differences for which no deferred tax asset is recognised     $ 225,903 $ 49,667  
Unused tax credits for which no deferred tax asset recognised     $ 1,100 $ 0  
Description of expiry date of deductible temporary differences, unused tax losses and unused tax credits     The Company’s unused tax losses and tax credits are subject to expiration in the years 2022 through 2041.    
Federal income tax rate 15.00% 15.00% 15.00% 15.00% 15.00%
Average effective tax rate 8.80% 8.60% 8.80% 9.40% 11.50%
Corporate income tax rate     8.00% 8.99% 11.50%