Components of Pension and Other Post-employment Benefit Plans Net Periodic Benefit Costs - Components of Net Periodic Benefit (Credit) Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Benefits
Defined Contribution Plan Disclosure [Line Items]
Service Cost	$ 304	$ 302
Interest Cost	6,757	4,135
Expected Return on Plan Assets	(9,867)	(9,319)
Amortization of Prior Service Credits	0	0
Amortization of Actuarial Loss	185	758
Net Periodic Benefit (Credit) Cost	(2,621)	(4,124)
Other Post-Employment Benefits
Defined Contribution Plan Disclosure [Line Items]
Service Cost	0	0
Interest Cost	3,261	1,974
Expected Return on Plan Assets	0	0
Amortization of Prior Service Credits	(601)	(601)
Amortization of Actuarial Loss	0	879
Net Periodic Benefit (Credit) Cost	$ 2,660	$ 2,252