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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, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounting Policies [Abstract] |  |  |
Depreciation expense | $ 54,300 | $ 47,700 | $ 45,400
Capital Expenditures Incurred but Not yet Paid | 10,000 | 14,000 |
Amortization of debt issuance costs | $ 3,193 | 4,631 | 3,475
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 | $ 9,400 | 12,100 | 22,400
Accrued liability relating to environmental remediation | 3,900 | 4,400 |
Amortization of Other Deferred Charges | 6,200 | 7,500 | 4,700
Deferred costs; amount deferred in period. | 4,100 | 700 |
Lower of cost or market inventory valuation adjustment | 24,878 | 12,431 | $ 0
Idle Inventory Costs | $ 22,100 | $ 62,400 |

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