Pension and Other Postretirement Benefits - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Pension Benefits [Member] | ||||||
| Defined Benefit Plan Disclosure [Line Items] | ||||||
| Service cost | $ 402 | $ 454 | $ 1,350 | $ 1,440 | ||
| Interest cost | 718 | 745 | 2,147 | 2,245 | ||
| Expected return on plan assets | (895) | (818) | (2,653) | (2,482) | ||
| Amortization of prior service cost | 0 | 0 | 0 | 0 | ||
| Recognized actuarial loss (gain) | 219 | 303 | 645 | 873 | ||
| Net periodic benefit cost | [1] | 444 | 684 | 1,489 | 2,076 | |
| Postretirement Benefits [Member] | ||||||
| Defined Benefit Plan Disclosure [Line Items] | ||||||
| Service cost | 220 | 202 | 660 | 605 | ||
| Interest cost | 327 | 310 | 981 | 931 | ||
| Expected return on plan assets | 0 | 0 | 0 | 0 | ||
| Amortization of prior service cost | (19) | (19) | (56) | (56) | ||
| Recognized actuarial loss (gain) | 13 | (8) | 39 | (26) | ||
| Net periodic benefit cost | [1] | $ 541 | $ 485 | $ 1,624 | $ 1,454 | |
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- Definition Amount of prior service cost (credit) 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 Amount, before tax, after reclassification adjustment, of increase (decrease) in accumulated other comprehensive income from gain (loss) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/disclosureRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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