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SHARE-BASED PAYMENTS - Share option plan changes (Details) Options in Thousands |  | 12 Months Ended
--- | --- | ---
Feb. 23, 2022 $ / shares | Dec. 31, 2023 Options $ / shares $ / shares | Dec. 31, 2023 Options $ / shares | Dec. 31, 2022 Options $ / shares $ / shares | Dec. 31, 2022 Options $ / shares
Share-based payment transaction |  |  |  |  |
Exercisable at end of period | Options |  | 859 | 859 |  |
Weighted average share price at the date of exercise | $ / shares | $ 7.01 | $ 4.88 |  | $ 4.41 |
Share option |  |  |  |  |
Share-based payment transaction |  |  |  |  |
Balance at January 1 | Options |  | 7,186 | 7,186 | 3,764 | 3,764
Issued on acquisition of Great Bear | Options |  |  |  | 9,880 | 9,880
Exercised | Options |  | (6,327) | (6,327) | (6,368) | (6,368)
Expired | Options |  |  |  | (90) | (90)
Outstanding at end of period | Options |  | 859 | 859 | 7,186 | 7,186
Exercisable at end of period | Options |  | 859 | 859 | 7,186 | 7,186
Balance at January 1 | $ / shares |  |  | $ 2.84 |  | $ 4.47
Issued on acquisition of Great Bear | $ / shares |  |  |  |  | 1.93
Exercised | $ / shares |  |  | 2.59 |  | 2.36
Expired | $ / shares |  |  |  |  | 4.69
Outstanding at end of period | $ / shares |  |  | 4.68 |  | 2.84
Exercisable at end of period | $ / shares |  | $ 4.68 | 4.68 | $ 2.84 | 2.84
Weighted average share price at the date of exercise | (per share) |  | $ 4.88 | $ 5.61 | $ 4.41 | $ 6.89

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