SHARE CAPITAL - Disclosure of number and weighted average exercise prices of share options (Details)
|
12 Months Ended |
|
Dec. 31, 2021
shares
$ / shares
|
Dec. 31, 2020
shares
$ / shares
|
| Disclosure of classes of share capital [abstract] |
|
|
| Number of share options outstanding in share-based payment arrangement at beginning of period | shares |
5,978,300
|
6,923,000
|
| Weighted average exercise price of share options outstanding in share-based payment arrangement at beginning of period | $ / shares |
$ 3.29
|
$ 3.74
|
| Number of share options granted in share-based payment arrangement | shares |
818,500
|
2,490,000
|
| Weighted average exercise price of share options granted in share-based payment arrangement | $ / shares |
$ 6.90
|
$ 2.22
|
| Number of share options exercised in share-based payment arrangement | shares |
(2,801,600)
|
(2,452,000)
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| Weighted average exercise price of share options exercised in share-based payment arrangement | $ / shares |
$ 3.76
|
$ 3.71
|
| Number of share options forfeited in share-based payment arrangement | shares |
(147,000)
|
(982,700)
|
| Weighted average exercise price of share options forfeited in share-based payment arrangement | $ / shares |
$ 4.29
|
$ 2.73
|
| Number of share options outstanding in share-based payment arrangement at end of period | shares |
3,848,200
|
5,978,300
|
| Weighted average exercise price of share options outstanding in share-based payment arrangement at end of period | $ / shares |
$ 3.68
|
$ 3.29
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| Number of share options exercisable in share-based payment arrangement | shares |
2,973,100
|
4,174,700
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| Weighted average exercise price of share options exercisable in share-based payment arrangement | $ / shares |
$ 3.40
|
$ 3.67
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