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RETIREMENT PLANS (Comparison of Obligations of Plan Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Retirement Benefits [Abstract] |  |  |
Projected benefit obligation | $ 30,226 | $ 39,123 | $ 39,412
Accumulated benefit obligation | 29,150 | 37,159 |
Fair value of plan assets at measurement date | $ 43,119 | $ 50,218 | $ 45,337

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