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Retirement Benefit Obligations - Sensitivity Analysis (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Actuarial Rate Of Expected Increase To Cost Of Covered Health Care Benefits |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |  |
Effect on the aggregate current service cost and interest cost, increase | $ 3 | $ 3 | $ 2
Effect on the aggregate current service cost and interest cost, decrease | (3) | (3) | (2)
Effect on pension and other post-retirement benefit obligations, increase | 73 | 72 | 70
Effect on pension and other post-retirement benefit obligations, decrease | $ (65) | (64) | (62)
Actuarial assumption of discount rates |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Percentage of reasonably possible decrease in actuarial assumption | 1.00% |  |
Percentage of reasonably possible increase in actuarial assumption | 1.00% |  |
Effect on the aggregate current service cost and interest cost, increase | $ 6 | 6 | 9
Effect on the aggregate current service cost and interest cost, decrease | (7) | (7) | (11)
Effect on pension and other post-retirement benefit obligations, increase | (686) | (782) | (809)
Effect on pension and other post-retirement benefit obligations, decrease | $ 786 | $ 902 | $ 934

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- Definition The reasonably possible percentage of the decrease in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard -URIDate 2024-03-27 + Details
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