ACQUIRED IN-PLACE LEASES AND ABOVE/BELOW MARKET LEASES Acquired Lease Intangibles and Leasing Costs Included in Other Assets and Other Liabilities and Deferred Credits (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, net	$ 1,616	$ 2,088
Other intangible assets, accumulated amortization	(1,156)	(1,128)
Below market leases	66,521	66,521
Below market leases, accumulated amortization	(35,254)	(33,073)
Acquired lease intangible liabilities, net	31,267	33,448
Leases, Acquired-in-Place
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, net	54,291	48,741
Other intangible assets, accumulated amortization	(44,782)	(38,906)
Above Market Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, net	21,643	21,667
Other intangible assets, accumulated amortization	(20,027)	(19,579)
Lease Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	$ 11,125	$ 11,923