Income Tax - Summary Of Temporary Difference Unused Tax Losses And Unused Tax Credits (Detail) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	$ (39,192)	$ (27,632)
Charged to net earnings	(43,422)	(14,171)
Charged to OCI	(24)	(405)
Exchange differences	(41)	3,016
Ending Balance	(82,679)	(39,192)
Accounting provisions and accruals [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	18,058	19,449
Charged to net earnings	(10,945)	(2,080)
Charged to OCI
Exchange differences	(91)	689
Ending Balance	7,022	18,058
Tax losses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	28,969	26,082
Charged to net earnings	(21,808)	2,661
Charged to OCI
Exchange differences	(642)	226
Ending Balance	6,519	28,969
Long-term asset [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	(73,956)	(57,684)
Charged to net earnings	(12,398)	(18,003)
Charged to OCI
Exchange differences	99	1,731
Ending Balance	(86,255)	(73,956)
Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	544	1,330
Charged to net earnings	(572)	(756)
Charged to OCI		(61)
Exchange differences	539	31
Ending Balance	511	544
Exchange rate effects on tax bases [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	(12,799)	(17,144)
Charged to net earnings	2,269	4,007
Charged to OCI
Exchange differences	54	338
Ending Balance	(10,476)	(12,799)
Cash flow hedges [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Beginning balance	(8)	335
Charged to net earnings	32
Charged to OCI	(24)	(344)
Exchange differences		1
Ending Balance		$ (8)

Deferred tax expense income recognised in other comprehensive income.

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- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2021-01-01
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The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

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-Name IAS
-Number 12
-IssueDate 2021-01-01
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

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- Definition

The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

+ References

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