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Pension And Other Post-Retirement Benefits (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position $ 7,100   $ 7,100   $ 7,300
Pension settlement loss 0 $ 25,612 0 $ 25,612 $ 92,300
Pension lump sum distribution   64,500   64,500  
Other Post-Retirement Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Expected required contributions     400    
Pension settlement loss 0 0 0 0  
Pension Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Pension settlement loss 0 $ 25,612 0 $ 25,612  
Accrued Expenses [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Liability, Defined Benefit Plan, Current $ 700   $ 700