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Employee Benefits - Pension Plan Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | $ 71,574 | $ 73,086 | $ 107,525
Fair Value Measurements, Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 71,574 | 73,086 |
Fair Value Measurements, Recurring | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 934 | 939 |
Fair Value Measurements, Recurring | Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 63,629 | 64,878 |
Fair Value Measurements, Recurring | Equity index mutual funds - international |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 2,086 | 2,231 |
Fair Value Measurements, Recurring | Domestic individual equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 4,925 | 5,038 |
Fair Value Measurements, Recurring | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 71,574 | 73,086 |
Fair Value Measurements, Recurring | Level 1 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 934 | 939 |
Fair Value Measurements, Recurring | Level 1 | Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 63,629 | 64,878 |
Fair Value Measurements, Recurring | Level 1 | Equity index mutual funds - international |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 2,086 | 2,231 |
Fair Value Measurements, Recurring | Level 1 | Domestic individual equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 4,925 | 5,038 |
Fair Value Measurements, Recurring | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 2 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 2 | Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 2 | Equity index mutual funds - international |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 2 | Domestic individual equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 3 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 3 | Fixed income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 3 | Equity index mutual funds - international |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | 0 | 0 |
Fair Value Measurements, Recurring | Level 3 | Domestic individual equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Assets at Fair Value | $ 0 | $ 0 |

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