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RETIREMENT PLANS - SERP (Details) - Supplemental Retirement Plan ('SERP') - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
RETIREMENT PLANS |  |  |
Fair value of plan assets | $ 30,700 |  | $ 30,700
Trading gains (losses), net | (20) | $ 1,200 |
Defined benefit plan | 23,200 |  | $ 24,500
Selling, general and administrative expenses |  |  |
RETIREMENT PLANS |  |  |
Unrealized gains (loss) | $ 11 | $ 1,300 |

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