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Income taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Taxes [Abstract] |
Disclosure of major components of tax expense (income) | The components of income tax benefit (expense) included in the determination of the profit (loss) from continuing operations comprise of:
| 2018 |  |  | 2017 |
Current tax expense |  |  |
Current period income tax | $ | 51 |  |  | $ | 34 |
Withholding tax | 319 |  |  | 1,537 |
Total current tax expense | $ | 370 |  |  | $ | 1,571 |
Deferred tax expense |  |  |
Origination and reversal of temporary differences | $ | 1,834 |  |  | $ | (13,227 | )
Adjustments for prior periods | (1,138 | ) |  | (1,922 | )
Change in unrecognized deductible temporary differences | (696 | ) |  | 15,149 |
Total deferred tax expense | $ | — |  |  | $ | — |
Total income tax expense | $ | 370 |  |  | $ | 1,571 |
Disclosure of reconciliation of accounting profit | The Corporation’s effective income tax rate differs from the combined Canadian federal and provincial statutory income tax rate for companies. The principal factors causing the difference are as follows:
| 2018 |  |  | 2017 |
Net loss before income taxes | $ | (26,953 | ) |  | $ | (6,477 | )
Expected tax recovery at 27.00% (2017 – 26.00%) | $ | (7,277 | ) |  | $ | (1,684 | )
Increase (reduction) in income taxes resulting from: |  |  |
Non-deductible expenses | 1,009 |  |  | 362 |
Investment tax credits earned | (2,439 | ) |  | (1,300 | )
Foreign tax rate differences | 227 |  |  | (1,341 | )
Change in unrecognized deductible temporary differences | 8,531 |  |  | 3,997 |
Other | 319 |  |  | 1,537 |
Income taxes | $ | 370 |  |  | $ | 1,571 |
Disclosure of temporary difference, unused tax losses and unused tax credits | At December 31, 2018, the Corporation did not recognize any deferred tax assets resulting from the following deductible temporary differences for financial statement and income tax purposes.
| 2018 |  |  | 2017 |
Scientific research expenditures | $ | 83,661 |  |  | $ | 81,459 |
Accrued warranty provision | 15,892 |  |  | 14,209 |
Share issuance costs | 668 |  |  | 982 |
Losses from operations carried forward | 107,339 |  |  | 110,851 |
Investment tax credits | 30,231 |  |  | 29,473 |
Property, plant and equipment and intangible assets | 168,311 |  |  | 173,928 |
| $ | 406,102 |  |  | $ | 410,902 |
The Corporation has available to carry forward the following as at December 31:
| 2018 |  |  | 2017 |
Canadian scientific research expenditures | $ | 83,661 |  |  | $ | 81,459 |
Canadian losses from operations | 33,801 |  |  | 38,840 |
Canadian investment tax credits | 30,231 |  |  | 29,473 |
German losses from operations for corporate tax purposes | 553 |  |  | 624 |
U.S. federal losses from operations | 45,140 |  |  | 43,074 |
Denmark losses from operations | 25,757 |  |  | 27,068 |
Hong Kong losses from operations | 24 |  |  | 6 |

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- Definition Disclosure Of Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates And Average Effective Tax Rate [Table Text Block] + References No definition available. + Details
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- Definition Income Taxes [Abstract] + References No definition available. + Details
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- Definition The disclosure of types of temporary differences, unused tax losses and unused tax credits. [Refer: Unused tax credits [member]; Unused tax losses [member]; Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g&doctype=Standard -URIDate 2017-03-09 + Details
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