Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	$ (1,873)	$ (4,393)	$ (3,765)	$ (5,249)
Amortization of actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(547)	(678)	(1,150)	(1,309)
Prior service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(161)	(153)	(313)	(306)
Pension and other postretirement effects
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit (expense)	359	28	746	(49)
Net of tax	(1,849)	(803)	(3,717)	(1,664)
Cash flow hedging activity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(31)	(31)	(62)	(62)
Tax benefit (expense)	7	7	14	43
Net of tax	(24)	(24)	(48)	(19)
Accumulated Defined Benefit Plans Adjustment, Net Settlement Gain (Loss) Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	$ (1,500)	$ 0	$ (3,000)	$ 0