Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	$ 1,771	$ (1,308)	$ 5,920	$ (7,039)
Amortization of actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	1,453	(2,978)	4,653	(9,126)
Prior service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	134	(149)	429	(457)
Pension and other post-retirement effects
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit	213	472	925	1,414
Net of tax	1,800	(2,655)	6,007	(8,169)
Cash flow hedging activity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(38)	1,761	(114)	1,478
Tax benefit	9	(414)	27	(348)
Net of tax	$ (29)	$ 1,347	$ (87)	$ 1,130