Employee Benefit and Deferred Compensation Plans - Plan Expense for Non-Contributory Benefit Pension Plan and Post-Retirement Health and Life Plans (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 | ||||
| Plan expense for noncontributory benefit pension plan and post-retirement health and life plans | ||||
| Interest cost | $ 237 | $ 227 | $ 474 | $ 454 |
| Expected return on plan assets | (267) | (248) | (534) | (496) |
| Recognized actuarial loss (gain) | 122 | 129 | 243 | 258 |
| Net periodic benefit cost (return) | 92 | 108 | 183 | 216 |
| Other Benefits | ||||
| Plan expense for noncontributory benefit pension plan and post-retirement health and life plans | ||||
| Interest cost | 5 | 6 | 10 | 11 |
| Expected return on plan assets | 0 | 0 | 0 | 0 |
| Recognized actuarial loss (gain) | (22) | (24) | (44) | (47) |
| Net periodic benefit cost (return) | $ (17) | $ (18) | $ (34) | $ (36) |
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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 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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- References No definition available.
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