Supplemental Information - Additional Information (Detail) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Supplemental Information [Line Items]
Operating expense	$ 698,144	$ 583,420
General and administrative expense	95,931	70,869
Depreciation and amortization gain on asset disposal loss on asset decommissioning and reversal of impairment of property plant and equipment [Member]
Supplemental Information [Line Items]
Operating expense	263,000	293,000
General and administrative expense	$ 11,000	$ 11,000

The amount of all expenses directly or indirectly attributed to the goods or services sold. Attributed expenses include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, such as depreciation and maintenance of factory buildings and equipment used in the production process, unallocated production overheads, and abnormal amounts of production costs of inventories.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 99
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_99&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 103
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_103&doctype=Standard
-URIDate 2021-03-24

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration