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Benefit Plans Pension Fair Value Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | $ 1,096,238 | $ 982,206 | $ 1,121,784
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 48,710 | 99,535 |
Fair Value, Inputs, Level 1 [Member] | Company Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 2,606 | 3,107 |
Fair Value, Inputs, Level 1 [Member] | U.S. Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 5,831 | 5,753 |
Fair Value, Inputs, Level 1 [Member] | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 294,703 | 89,247 |
Fair Value, Inputs, Level 1 [Member] | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 19,941 | 127,506 |
Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities, Corporate and Government Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 91,495 | 79,221 |
Fair Value, Inputs, Level 1 [Member] | Fixed Income Mutual Funds, Insurance Contracts |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Fixed Income Mutual Funds, Core Bond |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 144,948 | 73,315 |
Fair Value, Inputs, Level 1 [Member] | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Real Asset Mutual Funds, Commodities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 50,109 | 49,603 |
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount |  | 41,099 |
Fair Value, Inputs, Level 1 [Member] | Other Types of Investments, Global Allocation Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 4,326 | 4,370 |
Fair Value, Inputs, Level 1 [Member] | Other Types of Investments Insurance linked securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 2,870 | 13,243 |
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan Assets, Fair Value Hierarchy |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 710,695 | 585,999 |
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Company Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | U.S. Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 24,856 | 24,133 |
Fair Value, Inputs, Level 2 [Member] | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 10,314 | 9,496 |
Fair Value, Inputs, Level 2 [Member] | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities, Corporate and Government Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Fixed Income Mutual Funds, Insurance Contracts |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 25,458 | 25,126 |
Fair Value, Inputs, Level 2 [Member] | Fixed Income Mutual Funds, Core Bond |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 57,286 | 62,956 |
Fair Value, Inputs, Level 2 [Member] | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 186,804 | 167,693 |
Fair Value, Inputs, Level 2 [Member] | Real Asset Mutual Funds, Commodities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Other Types of Investments, Global Allocation Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Other Types of Investments, Multi-Strategy Fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 22,336 | 17,702 |
Fair Value, Inputs, Level 2 [Member] | Other Types of Investments Insurance linked securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan Assets, Fair Value Hierarchy |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 327,054 | 307,106 |
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Company Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | U.S. Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities, Corporate and Government Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Fixed Income Mutual Funds, Insurance Contracts |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 1,972 | 1,775 | $ 1,787
Fair Value, Inputs, Level 3 [Member] | Fixed Income Mutual Funds, Core Bond |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Real Asset Mutual Funds, Commodities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Other Types of Investments, Global Allocation Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Other Types of Investments Insurance linked securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan Assets, Fair Value Hierarchy |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 1,972 | 1,775 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 48,710 | 99,535 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Company Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 2,606 | 3,107 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | U.S. Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 30,687 | 29,886 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 305,017 | 98,743 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 19,941 | 127,506 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Fixed Income Securities, Corporate and Government Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 91,495 | 79,221 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Fixed Income Mutual Funds, Insurance Contracts |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 27,430 | 26,901 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Fixed Income Mutual Funds, Core Bond |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 202,234 | 136,271 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 186,804 | 167,693 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Real Asset Mutual Funds, Commodities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 50,109 | 49,603 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 45,156 | 41,099 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Other Types of Investments, Global Allocation Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 4,326 | 4,370 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Other Types of Investments Insurance linked securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 2,870 | 13,243 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Defined Benefit Plan Assets, Fair Value Hierarchy |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 1,039,721 | 894,880 |
Fair Value Measured at Net Asset Value Per Share | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 2,409 |
Fair Value Measured at Net Asset Value Per Share | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 6,444 | 5,980 |
Fair Value Measured at Net Asset Value Per Share | Hedge Funds, Multi-strategy [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | $ 50,073 | $ 78,937 |

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