Components of Net Periodic Benefit Cost - Net Periodic (Benefit) Increase Cost (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Pension benefits | ||||
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | ||||
| Service cost | $ 0 | $ 0 | $ 0 | $ 0 |
| Interest cost | 299 | 289 | 598 | 578 |
| Expected return on plan assets | (825) | (778) | (1,650) | (1,556) |
| Amortization of prior service cost | 0 | 0 | 0 | 0 |
| Amortization of the net loss (gain) | 0 | 14 | 0 | 28 |
| Net periodic (decrease) in benefit cost | (526) | (475) | (1,052) | (950) |
| Other post-retirement benefits | ||||
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | ||||
| Service cost | 1 | 3 | 2 | 6 |
| Interest cost | 148 | 135 | 296 | 270 |
| Expected return on plan assets | 0 | 0 | 0 | 0 |
| Amortization of prior service cost | 0 | 0 | 0 | 0 |
| Amortization of the net loss (gain) | (459) | (530) | (918) | (1,060) |
| Net periodic (decrease) in benefit cost | $ (310) | $ (392) | $ (620) | $ (784) |
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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 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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