Accumulated Other Comprehensive Income (Loss) (Components of OCI) (Details 1) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before tax		$ (25,654)	$ (2,293)
Other Comprehensive Income (Loss), income tax		3,162	2,878
Other Comprehensive Income (Loss), Net of Tax		(22,492)	585
Foreign Currency Translation Adjustment [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(13,284)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		0
Other Comprehensive Income (Loss), before tax		(13,284)	8,994
Other Comprehensive Income (Loss), income tax		0	0
Other Comprehensive Income (Loss), Net of Tax		(13,284)	8,994
Pension and Other Postretirement Plans [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(13,481)	(10,357)
Reclassification from AOCI, Current Period, Tax		3,451	2,664
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(10,030)	(7,693)
Other Comprehensive Income (Loss), before tax		(13,481)	(10,357)
Other Comprehensive Income (Loss), income tax		3,451	2,664
Other Comprehensive Income (Loss), Net of Tax		(10,030)	(7,693)
Net Prior Service (Credit) Cost [Member]
Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(494)	409
Reclassification from AOCI, Current Period, Tax		126	(105)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(368)	304
Net Actuarial Gain [Member]
Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(12,987)	(10,766)
Reclassification from AOCI, Current Period, Tax		3,325	2,769
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(9,662)	(7,997)
Cash Flow Hedges [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		947
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(125)
Other Comprehensive Income (Loss), before tax		1,111	(930)
Other Comprehensive Income (Loss), income tax		(289)	214
Other Comprehensive Income (Loss), Net of Tax		$ 822	$ (716)

[1] These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension and postretirement plan cost (see Note 11) and are included in non-operating pension and postretirement benefit income in the Company’s Condensed Consolidated Statements of Operations.