v3.20.2

Income taxes (Tables) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |
Schedule of Components of Income Tax Expense (Benefit) | The provision for income taxes differs from the result that would be obtained by applying the statutory tax rate of 21% (2018 - 21%) to income before income taxes. The difference results from the following items:
|  | December 31, 2019 |  | December 31, 2018
Computed expected benefit of income taxes |  | $ | (1,891,163 | ) |  | $ | (865,648 | )
Stock-based compensation |  |  | 1,286,201 |  |  |  | 332,082 |
Non-deductible interest expense |  |  | 25,722 |  |  |  | 25,658 |
Impact of change in tax rate |  |  | — |  |  |  | 5,163,267 |
Expiry of tax credits |  |  | 18,486 |  |  |  | — |
True up of prior year balances |  |  | 37,917 |  |  |  | — |
Increase (decrease) in valuation allowance |  |  | 522,837 |  |  |  | (4,655,359 | )
Income tax provision |  | $ | — |  |  | $ | — |
|  | December 31, 2018 |  | December 31, 2017
Computed expected benefit of income taxes | $ | (865,648) | $ | (966,289)
Stock-based compensation |  | 332,082 |  | 68,037
Non-deductible interest expense |  | 25,658 |  | 52,648
Impact of change in tax rate |  | 5,163,267 |  | -
Increase (decrease) in valuation allowance |  | (4,655,359) |  | 845,604
Income tax provision | $ | - | $ | -
Schedule of Deferred Tax Assets and Liabilities | The components of the net deferred income tax asset, the statutory tax rate and the amount of the valuation allowance are as follows:
|  | December 31, 2019 |  | December 31, 2018
Net operating loss carried forward |  | $ | 44,625,741 |  |  | $ | 42,136,043 |
Tax rate |  |  | 21 | % |  |  | 21 | %
Deferred income tax assets |  |  | 9,371,406 |  |  |  | 8,848,569 |
Valuation allowance |  |  | (9,371,406 | ) |  |  | (8,848,569 | )
Net deferred income tax asset |  | $ | — |  |  | $ | — |
|  | December 31, 2018 |  | December 31, 2017
Net operating loss carried forward | $ | 42,136,043 | $ | 39,717,436
Tax rate |  | 21% |  | 34%
Deferred income tax assets |  | 8,848,569 |  | 13,503,928
Valuation allowance |  | (8,848,569) |  | (13,503,928)
Net deferred income tax asset | $ | - | $ | -
Summary of Operating Loss Carryforwards |
Fiscal Year |  | Amount | Expiry Date
2000 | $ | 4,425,866 | 2020
2001 |  | 3,681,189 | 2021
2002 |  | 2,503,951 | 2022
2003 |  | 2,775,900 | 2023
2004 |  | 1,250,783 | 2024
2005 |  | 1,304,283 | 2025
2006 |  | 1,532,322 | 2026
2007 |  | 1,479,818 | 2027
2008 |  | 1,599,919 | 2028
2009 |  | 1,723,146 | 2029
2010 |  | 822,678 | 2030
2011 |  | 1,746,615 | 2031
2012 |  | 1,638,421 | 2032
2013 |  | 2,568,328 | 2033
2014 |  | 2,855,631 | 2034
2015 |  | 2,761,513 | 2035
2016 |  | 2,471,978 | 2036
2017 |  | 2,487,072 | 2037
2018 |  | 2,238,048 | 2038
2019 |  | 2,758,280 | 2039
Total | $ | 44,625,741 |
Fiscal Year |  | Amount | Expiry Date
1999 | $ | 88,022 | 2019
2000 |  | 4,425,866 | 2020
2001 |  | 3,681,189 | 2021
2002 |  | 2,503,951 | 2022
2003 |  | 2,775,900 | 2023
2004 |  | 1,250,783 | 2024
2005 |  | 1,304,283 | 2025
2006 |  | 1,532,322 | 2026
2007 |  | 1,479,818 | 2027
2008 |  | 1,599,919 | 2028
2009 |  | 1,723,146 | 2029
2010 |  | 822,678 | 2030
2011 |  | 1,746,615 | 2031
2012 |  | 1,638,421 | 2032
2013 |  | 2,568,328 | 2033
2014 |  | 2,855,631 | 2034
2015 |  | 2,761,513 | 2035
2016 |  | 2,471,978 | 2036
2017 |  | 2,487,072 | 2037
2018 |  | 2,418,608 | 2038
Total | $ | 42,136,043 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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