INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
INCOME TAXES
Effective Income tax (as percent)	2.40%	0.20%	(0.40%)
Statutory tax rate (as a percent)	35.00%	35.00%
Tax expense (benefit)	$ (851)	$ (524)	$ 324
Current tax (benefit) expense
Federal income tax	(338)		341
State and local income tax	(77)	275	836
Total current (benefit) expense	(415)	275	1,177
Deferred tax (benefit) expense
Federal income tax	(422)	(841)	(785)
State and local income tax	(14)	42	(68)
Total deferred benefit	(436)	(799)	(853)
Total income tax (benefit) provision	(851)	(524)	324
Tax (benefit) expense attributable to controlling interests	(405)	(179)	324
Income tax benefit attributable to noncontrolling interests	(446)	(345)
Provision calculated at federal statutory income tax rate:
Loss before taxes	$ (35,978)	$ (314,472)	(81,569)
Statutory rate	35.00%	35.00%
Income tax benefit computed at statutory rate	$ (12,592)	$ (110,065)
Less: noncontrolling interests	6,409	109,230
Income tax benefit attributable to controlling interests	(6,183)	(835)
State and local income taxes, net of federal benefit	(91)	317
Change in enacted tax rate	39,166
Change in valuation allowance	(33,297)	339
Income tax benefit attributable to controlling interests	(405)	(179)	324
Income tax benefit attributable to noncontrolling interests	(446)	(345)
Total income tax (benefit) provision	$ (851)	$ (524)	$ 324