INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 8,092	$ 36,921	$ 21,901	$ 65,728
Effective income tax rate	34.10%	36.60%	35.70%	36.40%
Discrete tax benefit	$ 6,300		$ 6,300		$ 6,500
Interest and penalties accrued related to unrecognized tax benefits	$ 1,900		$ 1,900		$ 1,900