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.