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Compensation Related Costs, Retirement Benefits (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period | 3 months |  |
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 75.00% |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 8.00% |  |
Defined Contribution Plan, Cost | $ 6,100,000 | $ 6,900,000 | $ 5,900,000
Pension Plan | Vested After Two Years of Service |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 25.00% |  |
Pension Plan | Vested After Three Years of Service |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 50.00% |  |
Pension Plan | Vested After Four Years of Service |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 75.00% |  |
Pension Plan | Vested After Five Years of Service |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 100.00% |  |
Postretirement Life Insurance |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost | $ 6,700,000 | 6,300,000 | 6,800,000
Defined Benefit Plan, Plan Assets, Benefits Paid | 633,000 | 587,000 | $ 1,200,000
Defined Benefit Plan, Base Amount of Death Proceeds, Annual Percentage Increase Until Retirement Age Reached | $ 3 |  |
Defined Benefit Plan, Period Death Benefit Required to be Paid Following Participant's Death | 90 days |  |
Directors And Officers | Deferred Compensation, Excluding Share-Based Payments and Retirement Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Deferred Compensation Liability, Current and Noncurrent | $ 443,000 | 445,000 |
Executive Officer | Long Term Incentive Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense | $ 628,000 | $ 590,000 |
Executive Officer | Long Term Incentive Plan | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period | 5 years |  |
Executive Officer | Long Term Incentive Plan | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period | 10 years |  |

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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 710 -SubTopic 10 -Name Accounting Standards Codification -Section 30 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483043/710-10-30-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-1 + Details
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- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482943/710-10-55-7 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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