Benefit Plans - Development of Funded Status (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension and Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	$ 242,253	$ 261,330
Projected Benefit Obligation	(242,253)	(261,330)	$ (274,975)
Plan Assets at Fair Value	240,216	235,612	250,674
Funded Status - Overfunded/(Underfunded)	(2,037)	(25,718)
Other Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	23,383	30,238
Projected Benefit Obligation	(23,383)	(30,238)	(29,580)
Plan Assets at Fair Value	156,604	134,371	$ 111,154
Funded Status - Overfunded/(Underfunded)	$ 133,221	$ 104,133