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Pension Benefits, Other Postretirement Benefits and Employee Savings and Investment Plans (Amounts Recognized in Balance Sheet) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets & Liabilities: |  |
Non-current assets | $ 5,251 | $ 5,123
Pension Benefits |  |
Assets & Liabilities: |  |
Non-current assets | 5,251 | 5,123
Current liabilities | (4) | (3)
Non-current liabilities | (226) | (310)
Net assets (liabilities) | 5,021 | 4,810
Accumulated Other Comprehensive Loss: |  |
Net actuarial (loss) gain | (11,803) | (11,807)
Prior service benefit | 0 | 0
Accumulated other comprehensive (loss) income | (11,803) | (11,807)
Other Postretirement Benefits |  |
Assets & Liabilities: |  |
Non-current assets | 0 | 0
Current liabilities | (166) | (136)
Non-current liabilities | (1,275) | (1,308)
Net assets (liabilities) | (1,441) | (1,444)
Accumulated Other Comprehensive Loss: |  |
Net actuarial (loss) gain | 189 | 80
Prior service benefit | 0 | 0
Accumulated other comprehensive (loss) income | $ 189 | $ 80

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