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Pension Benefits - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Pension Benefits |  |
Period of service to become eligible | 6 months |
Accumulated benefit obligation | $ 3.9 | $ 3.2
Subsidiaries |  |
Pension Benefits |  |
Pension expense | $ 1.2 | $ 1.1

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- Definition The period of service by substantially all of its U.S. employees to become eligible for the U.S. Defined Contribution Pension Plan. + References No definition available. + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits. + References No definition available. + Details
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- Details
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