Deferred income taxes (Schedule of Reconciliation of Total Tax Recovery) (Details) - CAD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Major components of tax expense (income) [abstract] | ||
| Loss before income taxes | $ (27,365) | $ (21,935) |
| Income tax rate | 30.00% | 30.00% |
| Accounting profit | $ (8,210) | $ (6,581) |
| Effect on income taxes of: | ||
| Non-deductible share-based compensation | 284 | 507 |
| Unrecognized deductible temporary difference and carry forward amounts and experimental development expenditures | 7,892 | 6,040 |
| Other non-deductible items | 34 | 34 |
| Tax expense (income) | ||
| X | ||||||||||
- Definition The amount of profit (loss) for a period before deducting tax expense. [Refer: Profit (loss)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The applicable income tax rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of deferred tax expense or income relating to the creation or reversal of temporary differences. [Refer: Temporary differences [member]; Deferred tax expense (income)] Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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| X | ||||||||||
- Definition The profit (loss) before tax expense or income. [Refer: Profit (loss)] Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Non-deductible share-based compensation. No definition available.
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| X | ||||||||||
- Definition Other non-deductible items. No definition available.
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