Accumulated Other Comprehensive Income (Loss) (Components of OCI) (Details 1) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before tax		$ (17,154)	$ (1,502)
Other Comprehensive Income (Loss), income tax		4,019	299
Other Comprehensive Income (Loss), Net of Tax		(13,135)	(1,203)
Foreign Currency Translation Adjustment [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(1,738)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		0
Other Comprehensive Income (Loss), before tax		(1,738)	(486)
Other Comprehensive Income (Loss), income tax		0	0
Other Comprehensive Income (Loss), Net of Tax		(1,738)	(486)
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		(17,058)	(1,637)
Reclassification from AOCI, Current Period, Tax		4,397	443
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(12,661)	(1,194)
Other Comprehensive Income (Loss), before tax		(17,058)	(1,637)
Other Comprehensive Income (Loss), income tax		4,397	443
Other Comprehensive Income (Loss), Net of Tax		(12,661)	(1,194)
Net Prior Service (Credit) Cost [Member]
Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	716	792
Reclassification from AOCI, Current Period, Tax		(184)	(213)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		532	579
Net Actuarial Gain [Member]
Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(17,774)	(2,429)
Reclassification from AOCI, Current Period, Tax		4,581	656
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(13,193)	(1,773)
Cash Flow Hedges [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		1,080
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		184
Other Comprehensive Income (Loss), before tax		1,642	621
Other Comprehensive Income (Loss), income tax		(378)	(144)
Other Comprehensive Income (Loss), Net of Tax		$ 1,264	$ 477

[1] These accumulated other comprehensive income 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.