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Pension and Other Postretirement Benefits (Amounts Recognized in the Consolidated Financial Statements) (Details) - Other Postretirement Benefits - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Accrued post retirement liability: Current portion | $ 358 | $ 335
Accrued post retirement liability: Long term portion | 5,844 | 6,108
Pre-tax accumulated other comprehensive loss – unamortized post-retirement healthcare costs | 1,942 | 2,137
Net amount recognized | $ 4,260 | $ 4,306

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