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OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Other Income and Expenses [Abstract] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Gain (Loss) Due to Settlement and Curtailment |  |  | $ (4,232) |  | $ (4,990)
Equity earnings in affiliates |  | $ 206 | 542 | $ 3,002 | 3,301
Other income (2) | [1] | 8,819 | 1,334 | 12,441 | 3,647
Other components of net periodic pension (cost) income (1) | [2] | 628 | (2,950) | 2,169 | (130)
Total Other income (expense) |  | 9,653 | $ (1,074) | 17,612 | 6,818
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net |  | $ 7,601 |  | $ 7,601 | $ 0
[1] | Includes a gain on change in control related to the acquisition of Askaynak in the three and nine months ended September 30, 2019 of $7,601. Refer to Note 4 to the consolidated financial statements for details.
[2] | Includes pension settlement charges in the three and nine months ended September 30, 2018 of $4,232 and $4,990. Refer to Note 13 to the consolidated financial statements for details.

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