INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	32.20%	83.90%	34.00%	74.80%
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of adjustment						$ (69,732)
Deferred tax liabilities	$ (141,799)		$ (141,799)			$ (160,850)
Impact of Adoption of ASC Topic 606 | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of adjustment					$ 89,300
Deferred tax liabilities	$ 37,409		$ 37,409		$ 19,600