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Share Capital and Capital Surplus - Changes in Issued Common Stock (Detail) - shares | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Disclosure of classes of share capital [abstract] |  |
Shares issued beginning balance | 82,624,377 | 84,571,230
Retirement of treasury shares | (1,691,425) | (1,946,853)
Shares issued ending balance | 80,932,952 | 82,624,377
Treasury shares beginning balance | (7,003,598) | (8,695,023)
Retirement of treasury shares | 1,691,425 | 1,946,853
Treasury shares ending balance | (5,312,173) | (7,003,598)
Number of outstanding shares beginning balance | 75,620,779 | 75,876,207
Number of outstanding shares ending balance | 75,620,779 | 75,620,779
Acquisition of treasury shares |  | (255,428)
Acquisition of treasury shares |  | (255,428)

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- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 160 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_iv&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph B10 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_iv&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_iv&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Number of acquisition of outstanding shares. + References No definition available. + Details
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