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Postretirement Benefit Plans - Defined Benefit Pension Plans - Additional Information (Detail) | 6 Months Ended
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Jun. 30, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items] |
Percentage of union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions | 85.00%
Percentage of us based union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions | 100.00%
Defined Contribution Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Balance of trust assets | $ 527,000
United States [Member] | Unfunded Plan [Member] | Non-qualified Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected contributions or payments to defined benefit plans | 256,000
Employer contributions or payments | 162,000
U.K Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected contributions or payments to defined benefit plans | 451,000
Employer contributions or payments | $ 230,000

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- Definition Percentage of US based union and non union employees eligible for either Statutory or companys sponsored profit sharing contributions. + References No definition available. + Details
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