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	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 31,368	$ (19,420)	$ 2,355	$ (43,329)
Effective income tax rate (as a percent)	10.00%		1.00%
Total unrecognized tax benefits including interest and penalties	$ 40,500		$ 40,500		$ 39,700
Unrecognized tax benefit, if subsequently recognized would reduce income tax expense	37,600		37,600		$ 37,200
Decrease in unrecognized tax benefit, reasonably possible within twelve months	12,700		12,700
Decrease in unrecognized tax benefit, reasonably possible within twelve months which would reduce the income tax provision	12,400		12,400
Decrease in unrecognized tax benefit which would reduce the income tax provision	$ 125,000		$ 125,000