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SHAREHOLDERS’ EQUITY - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss) | $ 1,955 | $ (822) | $ (2,299)
Foreign Currency Translation Adjustments |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss) | (939) | 2,574 | 114
Retirement Liability Adjustment |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Other Comprehensive Income (Loss) | 2,894 | (3,396) | (2,413)
Retirement Liability Adjustment | 2,894 | (3,396) | (3,054)
Tax Benefit | $ 0 | $ 0 | $ 641

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