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Summary of Right-of-Use-Assets (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 CAD ($)
Disclosure Of Quantitative Information About Rightofuse Assets [Line Items]
Balance, January 1, 2019	$ 0
Transition adjustments	73,464
Additions	1,947
Derecognition	(29)
Depreciation	(8,458)
Lease remeasurements	163
Effect of foreign currency exchange differences	(945)
Balance, December 31, 2019	66,142
Real Estate [member]
Disclosure Of Quantitative Information About Rightofuse Assets [Line Items]
Balance, January 1, 2019	0
Transition adjustments	58,635
Additions	0
Derecognition	(29)
Depreciation	(4,055)
Lease remeasurements	163
Effect of foreign currency exchange differences	(688)
Balance, December 31, 2019	54,026
Vehicles and Equipment [Member]
Disclosure Of Quantitative Information About Rightofuse Assets [Line Items]
Balance, January 1, 2019	0
Transition adjustments	14,829
Additions	1,947
Derecognition	0
Depreciation	(4,403)
Lease remeasurements	0
Effect of foreign currency exchange differences	(257)
Balance, December 31, 2019	$ 12,116

X

- Definition

The amount of additions to right-of-use assets. [Refer: Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2019-01-01
-Paragraph 53
-Subparagraph h
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_h&doctype=Standard
-URIDate 2019-03-27

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X

- Definition

The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2019-01-01
-Paragraph 53
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_a&doctype=Standard
-URIDate 2019-03-27

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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X

- Definition

The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2019-01-01
-Paragraph 53
-Subparagraph j
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_j&doctype=Standard
-URIDate 2019-03-27

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X

- Definition

The increase (decrease) in the revaluation surplus that relates to right-of-use assets. [Refer: Revaluation surplus; Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2019-01-01
-Paragraph 57
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_57&doctype=Standard
-URIDate 2019-03-27

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- Definition

Derecognition right of use assets.

+ References

No definition available.

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- Definition

Effect of foreign currency exchange differences, right-of-use assets.

+ References

No definition available.

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- Definition

Transition adjustments, right-of-use assets.

+ References

No definition available.

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