Pension and Other Postretirement Employee Benefits (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Funding of pension and other postretirement benefit plans	$ 4,602	$ 2,135
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Funding of pension and other postretirement benefit plans	2,000	2,100
Qualified Plan [Member] | Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to pension benefit plan	$ 2,600	$ 0