OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Deferred ground rent expense	$ 6,038	$ 5,662
Deferred tax liability, net	3,607	0
Deferred tenant revenue	2,284	878
Environmental remediation costs	1,379	0
Total Other liabilities	$ 13,308	$ 6,540