Retirement Plans And Other Postretirement Benefits (Components Of Net Periodic Benefit Income Or Cost For Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Weighted-average assumptions used to determine net periodic benefit cost:
Expected long-term return on plan assets	15.10%	10.40%	10.90%
Pension Benefits
Weighted-average assumptions used to determine benefit obligations:
Discount rate	5.07%	2.90%	2.57%
Defined Benefit Plan Assumption Expected Long Term Return On Assets At Year End	4.99%	3.05%	5.00%
Weighted-average assumptions used to determine net periodic benefit cost:
Discount rate	2.90%	2.57%	3.27%
Expected long-term return on plan assets	3.05%	5.00%	5.00%
Components of net periodic benefit cost:
Service cost	$ 0	$ 0	$ 0
Interest cost	8,945	8,398	10,156
Expected return on plan assets	(8,174)	(11,316)	(11,004)
Amortization of prior service costs and gains or losses	13,746	17,003	15,494
Net periodic benefit cost	$ 14,517	$ 14,085	$ 14,646
Other Post-Retirement Benefits
Weighted-average assumptions used to determine benefit obligations:
Discount rate	5.17%	2.86%	2.54%
Weighted-average assumptions used to determine net periodic benefit cost:
Discount rate	2.86%	2.54%	3.25%
Components of net periodic benefit cost:
Service cost	$ 18	$ 21	$ 29
Interest cost	207	195	243
Expected return on plan assets	0	0	0
Amortization of prior service costs and gains or losses	(140)	(141)	(198)
Net periodic benefit cost	$ 85	$ 75	$ 74