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Accounts Receivable And Contract Assets - Summary of Accounts Receivables (Detail) - CAD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Trade And Other Receivables [Line Items]
Trade receivables	$ 222,686	$ 213,815	$ 194,777
Less: allowance for doubtful accounts	(10,103)	(10,334)	(11,439)
Trade receivables, net	212,583	203,481	183,338
Other receivables	9,463	8,725	30,037
Total accounts receivable	$ 222,046	$ 212,206	$ 213,375

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