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Benefit Plans - Amounts Recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Pension Plan [Member] |  |  |
Amounts arising during the year: |  |  |
Net loss (gain) on pension assets | $ 1,190 | $ (3,246) | $ 24,047
Net (gain) loss on pension obligations | (4,166) | 4,851 | (38,949)
Reclassification adjustments recognized as components of net periodic benefit cost during the year: |  |  |
Net (gain) loss | (2,209) | (2,818) | (5,643)
Amount recognized in other comprehensive (loss) income | (5,185) | (1,213) | (20,545)
Other Postretirement Benefits Plan [Member] |  |  |
Amounts arising during the year: |  |  |
Net (gain) loss on pension obligations | (963) | (542) | (5,808)
Reclassification adjustments recognized as components of net periodic benefit cost during the year: |  |  |
Net (gain) loss | 1,383 | 1,676 | 497
Amount recognized in other comprehensive (loss) income | $ 420 | $ 1,134 | $ (5,311)

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