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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, 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 |

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