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PENSION AND OTHER POSTRETIREMENT PLANS (Amounts Recognized in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial loss | $ (475) | $ (110) | $ 153
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial loss | 852 | 1,362 |
SERP Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net actuarial loss | $ 431 | $ 553 |

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