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RETIREMENT BENEFIT PLANS (Narrative) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Gain (loss) recognized within accumulated other comprehensive loss | $ (6,600,000) | $ 7,400,000 |
Accumulated benefit obligation | 62,800,000 | 46,400,000 |
Benefit plans, assets | 45,724,000 | 38,053,000 | $ 39,914,000
Contributions expected to be paid to plan | 3,000,000 |  |
Total contributions made | $ 10,400,000 | 9,800,000 | $ 8,800,000
Defer payment and taxation, base salary, percentage (up to) | 75.00% |  |
Defer payment and taxation, bonus and other eligible cash compensation, percentage (up to) | 100.00% |  |
Deferred compensation plan, fair value of assets | $ 6,100,000 | $ 4,700,000 |
FRANCE |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Benefit plans, assets | 0 |  |
GERMANY |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Benefit plans, assets | $ 0 |  |

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