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POSTRETIREMENT BENEFITS (cash flows) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Postretirement benefits [Line Items] |  |  |
Postretirement benefit plan, contributions [Extensible List] | Postretirement benefit plan [Member] | Postretirement benefit plan [Member] |
Company contributions | $ 0 | $ 0 | $ 0
Postretirement benefit plan [Member] |  |  |
Expected benefit payments |  |  |
2024 | 4,711 |  |
2025 | 4,356 |  |
2026 | 3,907 |  |
2027 | 3,560 |  |
2028 | 3,277 |  |
2029 - 2033 | 13,049 |  |
Pension plan [Member] |  |  |
Postretirement benefits [Line Items] |  |  |
Cash surrender value of insurance polices that fund pension plan | 7,713 | $ 7,429 |
Expected benefit payments |  |  |
2024 | 320 |  |
2025 | 300 |  |
2026 | 280 |  |
2027 | 260 |  |
2028 | 250 |  |
2029 - 2033 | $ 910 |  |

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