Pension and Other Post-Retirement Benefit Plans (Funded Status) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Plans [Member]
Change in benefit obligation [Roll Forward]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	6,011	5,597	12,022	11,194
Change in plan assets [Roll Forward]
Employer contributions			1,100
Post-Retirement Healthcare Plans [Member]
Change in benefit obligation [Roll Forward]
Service cost	19	24	38	48
Interest cost	$ 15	$ 10	$ 30	$ 20