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Details of Significant Accounts - Share-based payment, schedule of FV of stock options granted using black-scholes option-pricing model (Details) - Share Incentive Plan shares in Thousands |  |  |  |  |  | 12 Months Ended
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Nov. 02, 2023 shares Y $ / shares | Aug. 21, 2023 shares Y $ / shares | May 23, 2023 shares Y $ / shares | Jan. 03, 2023 shares Y $ / shares | Jan. 21, 2022 Y shares $ / shares | Dec. 31, 2023 shares | Dec. 31, 2022 shares
Share-based payment arrangements |  |  |  |  |  |  |
Options granted (in shares) | shares | 5 | 7 | 2,260 | 8 | 2,143 | 2,288 | 2,143
Stock price (in USD per share) | $ 2.43 | $ 4.00 | $ 4.93 | $ 7.20 | $ 5.39 |  |
Exercise price (in USD per share) | $ 2.43 | $ 3.916 | $ 4.93 | $ 7.20 | $ 3.95 |  |
Expected price volatility | 70.37% | 70.65% | 69.15% | 64.85% | 53.75% |  |
Expected option life | Y | 3.88 | 3.88 | 3.88 | 3.87 | 3.88 |  |
Expected dividends | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |  |
Risk-free interest rate | 4.77% | 4.64% | 3.90% | 4.07% | 1.46% |  |
Fair value per unit (in USD per share) | $ 1.3487 | $ 2.2411 | $ 2.6615 | $ 3.7198 | $ 2.7637 |  |

X
- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2023-03-23 + Details
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X
- Definition The option life of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2023-03-23 + Details
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X
- Definition The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The exercise price of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The percentage of an expected dividend used to calculate the fair value of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The number of share options granted 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 ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_ii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The fair value per unit of share options granted. + References No definition available. + Details
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- Definition The stock price of share options granted. + References No definition available. + Details
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- Details
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