INCOME TAXES (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 benefit	$ 2,600	$ 8,662	$ 4,286	$ 22,992
Effective income tax rate	16.30%	34.20%	18.00%	35.70%
Discrete tax benefit	$ 6,300		$ 6,300		$ 5,800
Interest and penalties accrued related to unrecognized tax benefits	$ 1,900		$ 1,900		$ 1,900