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Lease Liabilities - Summary of future minimum lease payments (Detail) - CAD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	$ 65,296	$ 68,498
Imputed interest	10,684	11,273
Short Term Leases	160	165
Low-value leases	9	46
Lease liabilities	54,443	57,014	$ 61,926	$ 67,000
2022
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	11,487	15,448
2023
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	11,566	11,167
2024
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	8,436	8,192
2025
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	6,380	6,313
2026
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	4,608	4,561
Thereafter
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	$ 22,819	$ 22,817

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Short term leases

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The amount of the expense relating to leases of low-value assets accounted for applying paragraph 6 of IFRS 16. This expense shall not include the expense relating to short-term leases of low-value assets.

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-IssueDate 2021-01-01
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- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

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The amount of undiscounted operating lease payments to be received. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset.

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