INCOME TAXES (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) entity	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) entity	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Provision (benefit) for income taxes
Income tax benefit	$ 8,537	$ 10,697	$ 28,507	$ 27,736
Income tax due to the reversal of the net deferred tax liability at TRS			5,900
Income tax due to the reversal of the net deferred tax liability			$ 3,600
Number of entities with related income tax benefit | entity	1		1
Net deferred tax liabilities	$ 315,700		$ 315,700		$ 338,400
Wexford Acquisition
Provision (benefit) for income taxes
Net deferred tax liabilities	$ 2,300		$ 2,300