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Business And Summary Of Significant Accounting Policies (Narrative) (Details 2) - USD ($) $ in Thousands | 12 Months Ended
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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 |

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