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PENSION AND OTHER BENEFIT PLANS - 401(K) Employee Stock Ownership Plan (Details) - 401(k) Employee Stock Ownership Plan - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
PENSION AND OTHER BENEFIT PLANS |  |  |
Percentage of first eligible compensation fully matched by employer | 3.00% |  |
Percentage of matching contribution in the form of common stock | 100.00% |  |
Percentage of the next eligible compensation matched at 50% by employer | 3.00% |  |
Percentage of matching contributions for the next eligible compensation in the form of company stock | 50.00% |  |
(Income)/expense recognized under plan | $ 7.7 | $ 7.1 | $ 6.9
Interest credit contribution expense recognized for 401(k) plan | $ 1.9 | $ 1.4 | $ 1.1
Minimum |  |  |
PENSION AND OTHER BENEFIT PLANS |  |  |
Contribution from eligible compensation | 1.00% |  |
Maximum |  |  |
PENSION AND OTHER BENEFIT PLANS |  |  |
Contribution from eligible compensation | 90.00% |  |

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