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Retirement Plans, Pension Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | $ 19,929 | $ 32,982 | $ 35,676
Level 1 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 6,352 | 8,037 |
Level 2 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 13,577 | 24,945 |
Level 3 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 0 | 0 |
Domestic [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 5,208 | 7,033 |
Domestic [Member] | Level 1 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 5,208 | 7,033 |
Domestic [Member] | Level 2 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 0 | 0 |
Domestic [Member] | Level 3 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 0 | 0 |
International [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 55 | 79 |
International [Member] | Level 1 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 0 | 0 |
International [Member] | Level 2 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 55 | 79 |
International [Member] | Level 3 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 0 | 0 |
International Fixed Income Funds [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 14,551 | 25,732 |
International Fixed Income Funds [Member] | Level 1 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 1,060 | 889 |
International Fixed Income Funds [Member] | Level 2 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 13,491 | 24,843 |
International Fixed Income Funds [Member] | Level 3 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 0 | 0 |
Other Investments [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 115 | 138 |
Other Investments [Member] | Level 1 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 84 | 115 |
Other Investments [Member] | Level 2 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | 31 | 23 |
Other Investments [Member] | Level 3 [Member] |  |  |
Pension Plan Assets by Asset Category [Abstract] |  |  |
Total assets at fair value | $ 0 | $ 0 |

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