Pension, Postretirement, and Other Benefit Plans (Schedule of Funded Status of Plans and Composition of Accrued Pension Cost) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Noncurrent asset	$ 17,000	$ 19,300
Pension plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	103,137	112,688	$ 74,929
Benefit obligation	137,111	158,323	83,730
Funded status	(33,974)	(45,635)
Noncurrent asset	16,982	19,296
Current liability	(4,915)	(5,500)
Noncurrent liability	(46,041)	(59,431)
Net amount recognized	(33,974)	(45,635)
Net actuarial loss	19,529	22,512
Prior service cost/(credit)	(96)	(132)
Net amount recognized	19,433	22,380
Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0	0
Benefit obligation	26,715	28,684	$ 35,658
Funded status	(26,715)	(28,684)
Noncurrent asset	0	0
Current liability	(2,772)	(2,808)
Noncurrent liability	(23,943)	(25,876)
Net amount recognized	(26,715)	(28,684)
Net actuarial loss	1,345	1,991
Prior service cost/(credit)	(360)	(484)
Net amount recognized	$ 985	$ 1,507