INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income tax benefit	$ 23,461	$ 1,079
Effective tax rates (as a percent)	189.30%	16.10%
Federal statutory income tax rate (as a percentage)	21.00%	35.00%
Income tax expense - excluding excess tax benefit on stock compensation	$ 3,742	$ 2,683
Excess tax benefits recognized in income tax expense	$ 27,203	$ 3,762