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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, 2023 | Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Accrued post retirement liability: Current portion | $ 357 | $ 353
Accrued post retirement liability: Long term portion | 3,851 | 3,876
Pre-tax accumulated other comprehensive loss – unamortized post-retirement healthcare costs | 73 | 74
Net amount recognized | $ 4,135 | $ 4,155

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