Financial risks - Disclosure of detailed information about liquidity risk (Details) $ in Thousands	Dec. 31, 2021 CAD ($)
Disclosure of Financial Risks [Line Items]
Convertible debentures	$ 312,000
Revolving credit facility	128,788
Equipment financings	3,969
Lease liabilities	20,213
Financial liabilities	464,970
2022 [Member]
Disclosure of Financial Risks [Line Items]
Convertible debentures	312,000
Revolving credit facility	4,297
Equipment financings	1,584
Lease liabilities	9,388
Financial liabilities	327,269
2023 [Member]
Disclosure of Financial Risks [Line Items]
Convertible debentures	0
Revolving credit facility	4,297
Equipment financings	1,664
Lease liabilities	2,919
Financial liabilities	8,880
2024 [Member]
Disclosure of Financial Risks [Line Items]
Convertible debentures	0
Revolving credit facility	4,297
Equipment financings	393
Lease liabilities	1,478
Financial liabilities	6,168
2025 [Member]
Disclosure of Financial Risks [Line Items]
Convertible debentures	0
Revolving credit facility	115,897
Equipment financings	328
Lease liabilities	1,291
Financial liabilities	117,516
2026-2029 [Member]
Disclosure of Financial Risks [Line Items]
Convertible debentures	0
Revolving credit facility	0
Equipment financings	0
Lease liabilities	5,137
Financial liabilities	$ 5,137

The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_25&doctype=Standard
-URIDate 2021-03-24

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2021-03-24

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- Definition

Convertible debentures, total amount payable with interest

+ References

No definition available.

+ Details

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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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- Definition

Represents the amount of financings for equipment.

+ References

No definition available.

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- Definition

Revolving credit facility, total amount payable with interest

+ References

No definition available.

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