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Contributed Surplus - Summary of Contribution Surplus (Detail) - CAD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of Contribution surplus [Abstract]
Balance, January 1	$ 656,832	$ 655,107
Share-based compensation	1,783	1,725
Ending Balance	$ 658,615	$ 656,832

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- Definition

Disclosure of contribution surplus abstract.

+ References

No definition available.

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- Definition

The increase (decrease) in equity resulting from share-based payment transactions. [Refer: Equity]

+ References

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-Name IAS
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-IssueDate 2021-01-01
-Paragraph 106
-Subparagraph d
-Clause iii
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- Definition

The amount received or receivable from the issuance of the entity's shares in excess of nominal value.

+ References

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-Name IAS
-Number 1
-IssueDate 2021-01-01
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