INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	24.30%	35.80%	22.20%	62.30%
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of adjustment						$ (69,732)
Deferred tax liabilities	$ (148,770)		$ (148,770)			$ (160,850)
Increase in deferred tax liability from utilization of deferred tax assets			6,200
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	$ 39,036		$ 39,036		$ 19,600