INCOME TAXES - SCHEDULE OF INCOME BEFORE INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S.	$ (132,000)	$ 27,284	$ 1,149
Foreign	(21,633)	(4,819)	(3,387)
(Loss) earnings before income taxes	$ (153,633)	$ 22,465	$ (2,238)