Pension and Employee Benefit Plans - Components of Pension and Employee Benefit Expenses (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2023 |
Sep. 30, 2022 |
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| Pension Plan [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Net periodic benefit cost (gain) | $ 107 | $ (105) | $ 322 | $ (315) |
| Health Care Plan [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Interest cost | 318 | 219 | 955 | 658 |
| Expected return on plan assets | (285) | (390) | (856) | (1,170) |
| Amortization of net actuarial loss | $ 74 | $ 66 | $ 223 | $ 197 |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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. No definition available.
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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