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Summary of Expected Credit Loss Allowance (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Allowance For Doubtful Accounts [Abstract]    
Beginning balance $ 862 $ 929
Impairment loss recognized 29 812
Amounts written-off as uncollectible (70) (479)
Impairment loss reversed (231) (396)
Effect of movement in exchange rates (5) (4)
Ending balance $ 585 $ 862