INCOME TAXES- Components of income tax expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current income tax (expense) benefit	$ (13,151)	$ (6,339)	$ (5,361)
Deferred income tax provision	(23,879)	(80)	306,010
Total income tax provision	$ (37,030)	$ (6,419)	$ 300,649