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Pension and Other Postretirement Employee Benefits (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Funding of pension and other postretirement benefit plans	$ 8,664	$ 7,303
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Funding of pension and other postretirement benefit plans	3,000	3,300
Qualified Plan [Member] | Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to pension benefit plan	$ 5,700	$ 4,000

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