IMPAIRMENT (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) ft²	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) ft²	Sep. 30, 2015 USD ($)
Net carrying value	$ 34,888		$ 34,888
Capitalization rate (as a percent)	6.75%	6.75%	6.75%	6.75%
Provision for impairment	$ 35,734		$ 35,734
Impairment on real estate	$ 0	$ 0	$ 0	$ 0
Park West
Area of real estate property acquired (in square foot) | ft²	249,177		249,177
Decrease in estimated undiscounted cash to be received (as a percent)			10.00%
Provision for impairment			$ 35,734