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Share-based compensation (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure of terms and conditions of share-based payment arrangement [abstract] |
Disclosure of stock options granted |
|  | Number of options |  |  | Weighted average exercise price |
|  | # |  |  | $ |
Outstanding as at December 31, 2017 |  | 206,219 |  |  | 4.44 |
Granted |  | 593,781 |  |  | 65.80 |
Exercised |  | (240,214 | ) |  | 11.31 |
Cancelled |  | (74,627 | ) |  | 10.05 |
Outstanding as at December 31, 2018 |  | 485,159 |  |  | 74.53 |
Granted |  | 1,363,322 |  |  | 20.68 |
Exercised |  | (82,094 | ) |  | 10.02 |
Forfeited |  | (12,438 | ) |  | 56.28 |
Cancelled |  | (299,006 | ) |  | 115.80 |
Outstanding as at December 31, 2019 |  | 1,454,943 |  |  | 21.96 |
Exercisable as at December 31, 2019 |  | 1,200,242 |  |  | 21.24 |
Disclosure of fair values of options granted using the Black-Scholes option pricing model |
| 2019 | 2018
Grant date share price | $6.45 — $75.38 | $10.05 — $142.71
Exercise price | $7.17 — $75.38 | $10.05 — $148.74
Expected dividend yield | — | —
Risk free interest rate | 1.24% — 1.90% | 1.97% — 2.41%
Expected life | 5 years | 5 years
Expected volatiity | 100% | 100%
Disclosure of number and weighted average remaining contractual life of outstanding and exercisable share options | The following table is a summary of the Company’s share options outstanding as at December 31, 2019:
| Options outstanding |  | Options exercisable
|  | Weighted average |  |
|  | remaining contractual |  |
Exercise price | Number outstanding | life [years] | Exercise price | Number exercisable
$ | # | # | $ | #
2.61 | 35,065 | 3.49 | 2.61 | 35,065
4.42 | 99,502 | 2.71 | 4.42 | 99,502
5.43 | 16,264 | 3.49 | 5.43 | 16,264
10.65 | 3,730 | 3.49 | 10.65 | 3,730
13.07 | 10,855 | 3.49 | 13.07 | 10,855
13.47 | 1,418 | 3.49 | 13.47 | 1,418
16.08 | 18,409 | 3.49 | 16.08 | 18,409
17.89 | 4,178 | 3.49 | 17.89 | 4,178
18.09 | 37,313 | 3.34 | 18.09 | 37,313
20.10 | 493,363 | 4.72 | 20.10 | 493,363
21.11 | 12,438 | 4.67 | 21.11 | 12,438
24.12 | 9,950 | 4.59 | 24.12 | 6,219
26.13 | 14,925 | 3.62 | 26.13 | 14,925
40.20 | 29,851 | 4.45 | 40.20 | 22,388
44.22 | 2,488 | 3.41 | 44.22 | 2,488
47.24 | 1,493 | 4.37 | 47.24 | 1,493
50.25 | 227,861 | 5.09 | 50.25 | 129,353
52.26 | 498 | 4.21 | 52.26 | 498
55.28 | 498 | 4.12 | 55.28 | 498
59.30 | 498 | 3.96 | 59.30 | 498
7.17 | 199,005 | 4.83 | 7.17 | 199,005
7.50 | — | — | 7.50 | —
75.38 | 498 | 4.04 | 75.38 | 498
7.63 | 203,750 | 5.34 | 7.63 | 58,750
86.43 | 1,244 | 3.88 | 86.43 | 1,244
88.44 | 14,925 | 3.87 | 88.44 | 14,925
120.60 | 9,950 | 3.71 | 120.60 | 9,950
142.71 | 4,974 | 3.74 | 142.71 | 4,975
21.96 | 1,454,943 | 4.59 | 21.24 | 1,200,242
The following table is a summary of the Company's share options outstanding as at December 31, 2018:
| Options outstanding |  | Options exercisable
|  | Weighted average |  |
|  | remaining contractual |  |
Exercise price | Number outstanding | life [years] | Exercise price | Number exercisable
$ | # | # | $ | #
4.42 | 149,254 | 3.71 | 4.42 | 149,254
5.03 | 2,488 | 0.98 | 5.03 | 2,488
18.09 | 42,289 | 4.35 | 18.09 | 42,289
20.10 | 33,169 | 4.27 | 20.10 | 16,584
26.13 | 14,925 | 4.62 | 26.13 | 14,925
56.28 | 12,438 | 4.91 | 56.28 | —
59.30 | 498 | 4.96 | 59.30 | 498
86.43 | 1,244 | 4.88 | 86.43 | 1,244
88.44 | 14,925 | 4.87 | 88.44 | 14,925
120.60 | 9,950 | 4.71 | 120.60 | 9,950
142.71 | 4,975 | 4.74 | 142.71 | 1,658
148.74 | 199,004 | 4.70 | 148.74 | —
74.53 | 485,159 | 4.32 | 19.91 | 253,815

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- Definition The disclosure of information about indirect, by reference to the fair value of the equity instruments granted, measurement of the fair value of goods or services received as consideration for the entity's share options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_a&doctype=Standard -URIDate 2019-03-27 + Details
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