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Employee Benefit Plans Summary of Pension Plan and Postretirement Plan Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 768	$ 790	$ 2,303	$ 2,369
Expected return on plan assets	(978)	(976)	(2,934)	(2,927)
Net periodic postretirement benefit	(210)	(186)	(631)	(558)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	9	10	26	29
Net accretion and deferral	(136)	(135)	(407)	(406)
Net periodic postretirement benefit	$ (127)	$ (125)	$ (381)	$ (377)

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