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Income taxes - Expiration of non-capital losses for income tax purposes (Details) $ in Thousands | Dec. 31, 2023 CAD ($)
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Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | $ 116,143
2026 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 3
2027 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 278
2032 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 175
2033 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 9,095
2037 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 5
2039 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 118
2040 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 82,668
2041 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 16,816
2042 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | 3,677
2043 |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforwards | $ 3,308

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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