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BASIS OF PRESENTATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Basis of Presentation [Line Items] |  |  |  |  |
Other components of net periodic pension (cost) income (1) | [1] | $ (2,950) | $ (2,570) | $ (130) | $ 1,578
Operating Income (Loss) [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |
Other components of net periodic pension (cost) income (1) |  |  | (2,570) |  | 1,578
Cost of Sales [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |
Other components of net periodic pension (cost) income (1) |  |  | 1,635 |  | 4,005
Selling, General and Administrative Expenses [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |
Other components of net periodic pension (cost) income (1) |  |  | 1,078 |  | 2,856
Pension settlement charges [Member] | Adjustments for New Accounting Pronouncement [Member] |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |
Other components of net periodic pension (cost) income (1) |  |  | $ (5,283) |  | $ (5,283)
[1] | Other components of net periodic pension (cost) income include pension settlement charges in the three and nine months ended September 30, 2018 of $4,232 and $4,990, respectively, and charges of $5,283 in the three and nine months ended September 30, 2017. Refer to Note 12 to the consolidated financial statements for details.

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