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v3.23.2

Benefit Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Pension and Supplemental Executive Retirement Plans |  |  |  |
Components of Net Periodic Benefit Cost [Abstract] |  |  |  |
Company service cost | $ 0 | $ 1,869 | $ 0 | $ 3,626
Interest cost | 3,299 | 2,848 | 6,981 | 5,725
Expected return on plan assets | (3,425) | (4,864) | (7,006) | (9,816)
Net actuarial losses (gains) | 530 | 1,349 | 1,127 | 2,532
Prior service cost (credit) | 86 | (53) | 172 | (106)
Cost of settlements and curtailments | 1,000 | 0 | 8,847 | 0
Net periodic benefit cost (benefit) | 1,490 | 1,149 | 10,121 | 1,961
Other Postretirement Benefit Plans |  |  |  |
Components of Net Periodic Benefit Cost [Abstract] |  |  |  |
Company service cost | 362 | 306 | 748 | 654
Interest cost | 418 | 171 | 816 | 348
Expected return on plan assets | (2,054) | (2,626) | (4,117) | (5,251)
Net actuarial losses (gains) | (11) | (798) | (75) | (1,552)
Prior service cost (credit) | 466 | 122 | 931 | 244
Cost of settlements and curtailments | 0 | 0 | 0 | 0
Net periodic benefit cost (benefit) | $ (819) | $ (2,825) | $ (1,697) | $ (5,557)

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