OTHER INCOME AND OTHER EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other, net	$ (1,929)	$ (3,715)	$ (6,287)	$ (11,022)
Net periodic cost other than service cost [Member]
Other, net	(2,336)	(4,313)	(6,473)	(12,939)
Other, net [Member]
Other, net	$ 407	$ 598	$ 186	$ 1,917