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OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Other Income and Expenses [Abstract] |  |  |  |
Equity earnings in affiliates | $ 81 | $ 206 | $ 323 | $ 3,002
Other income (expense) (1) | 2,045 | 8,819 | 2,812 | 12,441
Other components of net periodic pension (cost) income | (1,064) | 628 | (1,967) | 2,169
Total Other income (expense) | $ 1,062 | 9,653 | 1,168 | 17,612
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net |  |  | 0 | 7,601
Acquisitions |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net |  |  | $ 0 | 7,601
International Welding |  |  |  |
Other Income and Expenses [Abstract] |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net |  | 7,601 |  | 7,601
Acquisitions |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net |  | $ 7,601 |  | $ 7,601

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