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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Earnings Per Share | The following table summarizes the computations of basic and diluted EPS:
| For the Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| (In thousands, except per share data)
Net income attributable to Amkor common stockholders | $ | 354,012 |  |  | $ | 359,813 |  |  | $ | 765,823 |
Weighted-average number of common shares outstanding — basic | 246,344 |  |  | 245,628 |  |  | 244,676 |
Effect of dilutive securities: |  |  |  |  |
Share-based awards | 1,474 |  |  | 1,548 |  |  | 1,529 |
Weighted-average number of common shares outstanding — diluted | 247,818 |  |  | 247,176 |  |  | 246,205 |
Net income attributable to Amkor per common share: |  |  |  |  |
Basic | $ | 1.44 |  |  | $ | 1.46 |  |  | $ | 3.13 |
Diluted | $ | 1.43 |  |  | $ | 1.46 |  |  | $ | 3.11 |
Schedule of Antidilutive Effect of Potential Shares of Common Stock that were Excluded from Diluted Earnings Per Share | The following table summarizes the potential shares of common stock that were excluded from diluted EPS, because the effect of including these potential shares was anti-dilutive:
| For the Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| (In thousands)
Share-based awards | — |  |  | 2 |  |  | 180 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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