Retirement Plans, Amounts Recognized in Accumulated Other Comprehensive Income Table (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
RAP
Defined Benefit Plan Disclosure [Line Items]
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax	$ (590)	$ (723)
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax	14,820	24,758
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax, Total	14,230	24,035
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax	(196)	(252)
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax	69	267
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax, Total	$ (127)	$ 15