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Details of Significant Accounts - Share-based payment, schedule of movements of outstanding incentive stock option plan (Details) shares in Thousands, Option in Thousands | 12 Months Ended
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Dec. 31, 2023 Option $ / shares | Dec. 31, 2022 Option shares $ / shares
No. of options |  |
Options exercisable at December 31 (in shares) | shares |  | 0
Incentive Stock Option Plan |  |
No. of options |  |
Options outstanding at January 1 (in shares) | 26,629 | 23,046
Options granted (in shares) | 0 | 8,388
Options forfeited (in shares) | 0 | (1,681)
Options exercised (in shares) | (26,629) | (3,124)
Options outstanding at December 31 (in shares) | 0 | 26,629
Options exercisable at December 31 (in shares) | 0 | 26,629
Weighted-average exercise price |  |
Options outstanding at January 1 (in USD per share) | $ / shares | $ 0.21 | $ 0.18
Options granted (in USD per share) | $ / shares | 0 | 0.27
Options forfeited (in USD per share) | $ / shares | 0 | 0.22
Options exercised (in USD per share) | $ / shares | 0.21 | 0.10
Options outstanding at December 31 (in USD per share) | $ / shares | $ 0 | $ 0.21

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- Definition The number of share options forfeited in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_iii&doctype=Standard -URIDate 2023-03-23 + Details
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