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, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 789	$ 855	$ 1,579	$ 1,711
Expected return on plan assets	(975)	(877)	(1,951)	(1,754)
Net amortization and deferral	0	80	0	161
Net periodic benefit	(186)	58	(372)	118
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	9	13	19	26
Net accretion and deferral	(136)	(136)	(271)	(272)
Net periodic benefit	$ (127)	$ (123)	$ (252)	$ (246)