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Income taxes - Components of Deferred Tax Assets and Liabilities (Details) - CAD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax assets | $ 9,167 |
Deferred tax liability | 32,741 |
Deferred tax liability, net | (23,574) | $ (1,205)
Non-capital losses |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax assets | 929 |
Deferred tax liability, net | 929 |
Deferred and restricted share units |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax assets | 29 |
Deferred tax liability, net | 29 |
Other assets |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax assets | 8,209 |
Deferred tax liability, net | 8,209 |
Investments |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability, net |  | $ (1,205)
Stream interest |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability | 28,823 |
Deferred tax liability, net | (28,823) |
Property, Plant, & Equipment |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability | 3,873 |
Deferred tax liability, net | (3,873) |
Other Liabilities |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability | 45 |
Deferred tax liability, net | $ (45) |

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