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v3.20.4

Pension Benefits, Other Postretirement Benefits and Employee Savings and Investment Plans (Amounts Recognized in Balance Sheet) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets & Liabilities: |  |
Non-current assets | $ 5,278 | $ 12,790
Pension Benefits |  |
Assets & Liabilities: |  |
Non-current assets | 5,278 | 12,790
Current liabilities | (14) | (5)
Non-current liabilities | (257) | (250)
Net assets (liabilities) | 5,007 | 12,535
Accumulated Other Comprehensive Loss: |  |
Net actuarial (loss) gain | (11,171) | (13,085)
Prior service benefit | 0 | 0
Accumulated other comprehensive (loss) income | (11,171) | (13,085)
Other Postretirement Benefits |  |
Assets & Liabilities: |  |
Non-current assets | 0 | 0
Current liabilities | (148) | (282)
Non-current liabilities | (1,355) | (1,317)
Net assets (liabilities) | (1,503) | (1,599)
Accumulated Other Comprehensive Loss: |  |
Net actuarial (loss) gain | 119 | 54
Prior service benefit | 97 | 209
Accumulated other comprehensive (loss) income | $ 216 | $ 263

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