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SHARE CAPITAL AND SHARE-BASED PAYMENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-Based Payment Arrangements [Abstract] |
Disclosure of number and weighted average exercise prices of share options | The changes in issued stock options during the years ended December 31, 2020 and 2019 are as follows:
| 2020 | 2019
| Number of stock options | Weighted average exercise price (C$/option) | Number of stock options | Weighted average exercise price (C$/option)
Outstanding, beginning of year | 1,802,623 |  | 12.14 |  | 2,638,749 |  | 10.35 |
Granted | 445,690 |  | 26.12 |  | 514,355 |  | 16.81 |
Exercised | (820,929) |  | 10.86 |  | (1,093,844) |  | (8.78) |
Expired | (2,622) |  | 14.95 |  | (193,167) |  | (18.90) |
Forfeited | (19,326) |  | 23.53 |  | (63,470) |  | (12.81) |
Outstanding, end of year | 1,405,436 |  | 17.16 |  | 1,802,623 |  | 12.14 |
Disclosure of indirect measurement of fair value of goods or services received, share options granted during period | The weighted average fair value of stock options granted during the years ended December 31, 2020 and 2019 were estimated to be C$8.32 an d C$6.22 per stock option, respectively, at the grant date using the Black-Scholes option pricing model, based on the following assumptions:
Years ended December 31 | 2020 | 2019
Estimated forfeiture rate (%) | 3.0 |  | 3.0 |
Expected dividend yield (%) | — |  | — |
Risk-free interest rate (%) | 1.31 |  | 1.78 |
Expected life (years) | 4.2 | 4.2
Expected volatility (%) | 45.8 |  | 45.8 |
Weighted average share price (C$) | 26.12 |  | 16.81 |
Disclosure of range of exercise prices of outstanding share options | The following table summarizes information about stock options outstanding and exercisable at December 31, 2020:
| Stock options outstanding | Stock options exercisable
Exercise prices (C$) | Number of stock options outstanding | Weighted average remaining contractual life (years) | Number of stock options exercisable | Weighted average exercise price (C$/option)
5.83 - 11.16 | 415,887 |  | 2.5 | 364,219 |  | 9.27 |
11.17 - 17.06 | 447,821 |  | 4.6 | 365,793 |  | 15.57 |
17.07 - 27.04 | 431,218 |  | 5.8 | 286,708 |  | 23.92 |
27.05 - 29.09 | 110,510 |  | 6.4 | 16,980 |  | 29.09 |
| 1,405,436 |  | 4.5 | 1,033,700 |  | 15.89 |
Disclosure of number and weighted average exercise prices of other equity instruments | The following table summarizes the changes in DSUs outstanding during the years ended December 31, 2020 and 2019:
| 2020 | 2019
Years ended December 31 | Number of DSUs | Number of DSUs
Outstanding, beginning of year | 613,617 |  | 533,698 |
Granted | 63,089 |  | 79,919 |
Issued in connection with Alacer acquisition | 234,440 |  | — |
Redeemed | (163,161) |  | — |
Outstanding, end of year | 747,985 |  | 613,617 |
The following table summarizes the changes in RSUs outstanding during the years ended December 31, 2020 and 2019:
| 2020 | 2019
Years ended December 31 | Number of RSUs | Number of RSUs
Outstanding, beginning of year | 356,160 |  | 425,095 |
Granted | 145,987 |  | 195,530 |
Issued in connection with Alacer acquisition | 998,901 |  | — |
Settled | (719,345) |  | (200,671) |
Forfeited | (32,838) |  | (63,794) |
Outstanding, end of year | 748,865 |  | 356,160 |
The associated compensation cost is recorded in share-based compensation expenses.
| 2020 | 2019
Years ended December 31 | Number of PSUs | Number of PSUs
Outstanding, beginning of year | 308,500 |  | 311,100 |
Granted | 222,045 |  | 144,500 |
Issued in connection with Alacer acquisition | 985,489 |  | — |
Settled | (402,198) |  | (122,300) |
Forfeited | — |  | (24,800) |
Outstanding, end of year | 1,113,836 |  | 308,500 |
Explanation of effect of share-based payments on entity's profit or loss | Total share-based compensation expense, including all equity and cash-settled arrangements, for the years ended December 31, 2020 and 2019 has been recognized in the consolidated financial statements as follows:
Years ended December 31 | 2020 | 2019
Equity-settled |  |
Production costs | $ | 449 |  | $ | 250 |
Share-based compensation expense | 6,903 |  | 3,715 |
Exploration, evaluation and reclamation expense | 43 |  | 40 |
Transaction and integration expense | 1,099 |  | — |
Cash-settled |  |
Production costs | 1,715 |  | 1,201 |
Share-based compensation expense | 1,597 |  | 9,099 |
Exploration, evaluation and reclamation expense | 126 |  | 119 |
Transaction and integration expense | 3,919 |  | — |
| $ | 15,851 |  | $ | 14,424 |

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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 2020-01-01 -Paragraph 47 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the number and weighted average exercise prices of other equity instruments (ie other than share options). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the number and weighted average exercise prices of share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the range of exercise prices for outstanding share options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The explanation that enables users of financial statements to understand the effect of share-based payment transactions on the entity's profit (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 50 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_50&doctype=Standard -URIDate 2020-01-01 + Details
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