INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 16,285	$ 31,368	$ (47,319)	$ 2,355
Effective income tax rate (as a percent)		10.00%		1.00%
Unrecognized tax benefits including interest and penalties	52,000		52,000		$ 52,300
Unrecognized tax benefit, if subsequently recognized would reduce income tax expense	48,600		48,600		$ 49,100
Decrease in unrecognized tax benefit, reasonably possible within twelve months	24,000		24,000
Decrease in unrecognized tax benefit, reasonably possible within twelve months which would reduce the income tax provision	$ 23,500		$ 23,500