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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		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 767	$ 789	$ 1,535	$ 1,579
Expected return on plan assets	(978)	(975)	(1,956)	(1,951)
Net periodic postretirement benefit	(211)	(186)	(421)	(372)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	8	9	17	19
Net accretion and deferral	(135)	(136)	(271)	(271)
Net periodic postretirement benefit	$ (127)	$ (127)	$ (254)	$ (252)

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