INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax benefit (expense)	$ (6,936)	$ (6,281)
U.S. federal statutory tax rate, percentage	21.00%
Effective income tax rate	13.90%	15.60%
Income tax provision related to Tax Cuts and Jobs Act			$ 100
Global intangible low-taxed income	$ 800