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SHARE-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [abstract] |
Disclosure of number and weighted average exercise prices of share options [Table Text Block] |
|  | Options (thousands) |  |  | Average price |
Outstanding at January 1, 2019 |  | 10,337 |  |  | 1.64 |
Granted |  | 4,612 |  |  | 0.75 |
Exercised |  | (463 | ) |  | 0.38 |
Cancelled/forfeited |  | (178 | ) |  | 1.58 |
Expired |  | (3,552 | ) |  | 2.23 |
Outstanding at January 1, 2020 |  | 10,756 |  |  | 1.12 |
Granted |  | 1,835 |  |  | 0.85 |
Exercised |  | (1,599 | ) |  | 0.53 |
Cancelled/forfeited |  | (74 | ) |  | 1.31 |
Expired |  | (1,949 | ) |  | 1.02 |
Outstanding at December 31, 2020 |  | 8,969 |  |  | 1.19 |
Exercisable at December 31, 2020 |  | 6,365 |  |  | 1.35 |
Disclosure of options and average life [Table Text Block] |
Range of exercise price |  | Options (thousands) |  |  | Average life (years) |
$0.38 to $0.75 |  | 2,670 |  |  | 2.52 |
$0.76 to $1.00 |  | 2,823 |  |  | 3.03 |
$1.01 to $1.38 |  | 1,928 |  |  | 1.47 |
$1.39 to $2.86 |  | 1,548 |  |  | 1.55 |
|  | 8,969 |  |  | 2.17 |
Disclosure of inputs used in measurement of fair value at grant date [Table Text Block] |
|  | At December 31, |
|  | 2020 |  |  | 2019 |
Expected term (years) |  | 5.0 |  |  | 5.0 |
Forfeiture rate |  | 0% |  |  | 0% |
Volatility |  | 65% |  |  | 64% |
Dividend yield |  | 0% |  |  | 0% |
Risk-free interest rate |  | 1.1% |  |  | 1.8% |
Weighted-average fair value per option | $ | 0.46 |  | $ | 0.41 |
Disclosure of DSU's and PSU's issued and outstanding [Table Text Block] |
|  | DSUs (thousands) |  |  | PSUs (thousands) |
Outstanding at January 1, 2019 |  | 2,328 |  |  | 1,210 |
Granted |  | 682 |  |  | 875 |
Settled |  | (656 | ) |  | (410 | )
Outstanding at January 1, 2020 |  | 2,354 |  |  | 1,675 |
Granted |  | 572 |  |  | 825 |
Settled |  | (803 | ) |  | (400 | )
Outstanding at December 31, 2020 |  | 2,123 |  |  | 2,100 |
Disclosure of share based compensation expense (recovery) [Table Text Block] |
|  | Years ended December 31, |
|  | 2020 |  |  | 2019 |
Share options - amortization |  | 1,013 |  |  | 1,786 |
Performance share units - amortization |  | 1,231 |  |  | 1,015 |
Change in fair value of deferred share units |  | 3,066 |  |  | 325 |
|  | 5,310 |  |  | 3,126 |

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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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- 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 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph 45 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The disclosure of the number and weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_d&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Disclosure of detailed information about share based compensation expense. + References No definition available. + Details
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