Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	$ (452)	$ (1,659)
Amortization of actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(283)	(1,732)
Prior service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(151)	(152)
Pension and other post-retirement effects
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit	12	254
Net of tax	(422)	(1,630)
Cash flow hedging activity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification	(39)	(29)
Tax benefit	9	0
Net of tax	$ (30)	$ (29)