Business And Summary Of Significant Accounting Policies (Narrative) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Depreciation expense	$ 47,700	$ 45,400	$ 55,000
Capital Expenditures Incurred but Not yet Paid	14,000	23,400
Amortization of debt issuance costs	$ 4,631	3,475	8,642
Related Party Tax Agreement Percent Of Savings	85.00%
Environmental Remediation Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling and administrative expenses
Environmental remediation, compliance and management expenses	$ 12,100	22,400	16,900
Accrued liability relating to environmental remediation		4,400
Amortization of Other Deferred Charges	7,500	4,700	4,600
Deferred costs; amount deferred in period.	700	17,200
Non-cash inventory write-downs	12,431	0	$ 0
Idle Inventory Costs	$ 62,400	$ 16,000