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Accounts Receivable And Contract Assets - Summary of Aging of Trade Receivables (Detail) - CAD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure Of Aging Of Trade Receivables [Line Items] |  |  |
Trade receivables | $ 222,686 | $ 213,815 | $ 194,777
Current to 90 days [Member] |  |  |
Disclosure Of Aging Of Trade Receivables [Line Items] |  |  |
Trade receivables | 178,646 | 183,105 | 152,285
Over 90 days [Member] |  |  |
Disclosure Of Aging Of Trade Receivables [Line Items] |  |  |
Trade receivables | $ 44,040 | $ 30,710 | $ 42,492

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