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Retirement Plans, Fair Value of Pension Plan Investments Table (Details) - RAP - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Pension Plan Investments |  |  |
RAP Investment Amount | $ 478,970 | $ 453,457 | $ 407,405
Fair Value, Inputs, Level 1 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 438,554 | 409,771 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 40,416 | 43,687 |
Money Market Funds [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 7,892 | 10,040 |
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 7,892 | 10,040 |
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Defined Benefit Plan, Common Collective Trust |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 183,059 | 164,891 |
Defined Benefit Plan, Common Collective Trust | Fair Value, Inputs, Level 1 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 183,059 | 164,891 |
Defined Benefit Plan, Common Collective Trust | Fair Value, Inputs, Level 2 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Defined Benefit Plan, Common Collective Trust | Fair Value, Inputs, Level 3 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Mutual Fund [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 247,602 | 234,840 |
Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 247,602 | 234,840 |
Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Group Annuity Contracts [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 40,416 | 43,687 |
Group Annuity Contracts [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Group Annuity Contracts [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | 0 | 0 |
Group Annuity Contracts [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Pension Plan Investments |  |  |
RAP Investment Amount | $ 40,416 | $ 43,687 | $ 40,939

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