Pensions - Components of Net Periodic Pension Cost (Details) - Pension Plans [Member] - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Pensions [Abstract] | ||||
| Service cost | $ 130 | $ 132 | $ 260 | $ 265 |
| Interest cost | 493 | 496 | 987 | 991 |
| Expected return on plan assets | (815) | (767) | (1,630) | (1,534) |
| Amortization of prior service credit | 0 | (3) | 0 | (6) |
| Rate-regulated adjustment | 192 | 142 | 383 | 284 |
| Net periodic pension cost | $ 0 | $ 0 | $ 0 | $ 0 |
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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 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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- Definition Change in the defined benefit plan regulatory asset from pension contribution greater (less) than net periodic benefit cost. No definition available.
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- Details
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