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Benefit Plans - Accumulated Other Comprehensive loss (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Pension Plan |  |  |
Amounts within accumulated other comprehensive loss that had not yet been recognized as components of net periodic benefit cost |  |  |
Net actuarial loss (gain) | $ 15,812 | $ 36,357 |
Total, pretax effect | 15,812 | 36,357 |
Tax impact | (4,218) | (9,698) |
Ending balance in accumulated other comprehensive loss | 11,594 | 26,659 |
Other Benefits |  |  |
Amounts within accumulated other comprehensive loss that had not yet been recognized as components of net periodic benefit cost |  |  |
Net actuarial loss (gain) | (8,405) | (3,094) | $ (1,068)
Total, pretax effect | (8,405) | (3,094) |
Tax impact | 2,242 | 825 |
Ending balance in accumulated other comprehensive loss | $ (6,163) | $ (2,269) |

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