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Benefit Plans Pension Fair Value Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | $ 982,206 | $ 1,121,784 | $ 1,093,784
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 99,535 | 92,207 |
Fair Value, Inputs, Level 1 [Member] | Company Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 3,107 | 3,639 |
Fair Value, Inputs, Level 1 [Member] | U.S. Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 5,753 | 8,197 |
Fair Value, Inputs, Level 1 [Member] | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 89,247 | 100,197 |
Fair Value, Inputs, Level 1 [Member] | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 127,506 | 157,814 |
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 | 79,221 | 87,772 |
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 | 73,315 | 107,394 |
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 | 49,603 | 50,525 |
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount |  | 41,628 |
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 | 4,370 | 5,680 |
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 | 13,243 | 19,287 |
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 | 585,999 | 674,340 |
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 | 24,133 | 43,287 |
Fair Value, Inputs, Level 2 [Member] | International Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 9,496 | 23,022 |
Fair Value, Inputs, Level 2 [Member] | Emerging Markets Equity Mutual Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 3,315 |
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 | 25,126 | 38,555 |
Fair Value, Inputs, Level 2 [Member] | Fixed Income Mutual Funds, Core Bond |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 62,956 | 71,608 |
Fair Value, Inputs, Level 2 [Member] | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 167,693 | 153,954 |
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 | 17,702 | 16,103 |
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 | 307,106 | 349,844 |
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 | 1,775 | 1,787 | $ 1,793
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 | 1,775 | 1,787 |
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 | 99,535 | 92,207 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Company Stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 3,107 | 3,639 |
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 | 29,886 | 51,484 |
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 | 98,743 | 123,219 |
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 | 127,506 | 161,129 |
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 | 79,221 | 87,772 |
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 | 26,901 | 40,342 |
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 | 136,271 | 179,002 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 167,693 | 153,954 |
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 | 49,603 | 50,525 |
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 41,099 | 41,628 |
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 | 4,370 | 5,680 |
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 | 13,243 | 19,287 |
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 | 894,880 | 1,025,971 |
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 | 2,409 | 3,568 |
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 | 5,980 | 7,211 |
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 | $ 78,937 | $ 85,034 |

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