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Business And Summary Of Significant Accounting Policies (Narrative) (Details 2) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accounting Policies [Abstract]      
Depreciation expense $ 45,400 $ 55,000 $ 51,500
Capital Expenditures Incurred but Not yet Paid 23,400 15,700  
Amortization of debt issuance costs $ 3,475 8,642 9,179
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 $ 22,400 16,900 11,100
Accrued liability relating to environmental remediation 4,400 4,900  
Amortization of Other Deferred Charges 4,700 4,600 $ 6,000
Deferred costs; amount deferred in period. $ 17,200 $ 700