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, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, net	$ 249	$ 518
Other intangible assets, accumulated amortization	(1,061)	(981)
Below market leases	65,198	63,172
Below market leases, accumulated amortization	(37,614)	(37,220)
Acquired lease intangible liabilities, net	27,584	25,952
Leases, Acquired-in-Place
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, net	69,232	40,884
Other intangible assets, accumulated amortization	(34,575)	(34,603)
Above Market Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, net	9,680	11,963
Other intangible assets, accumulated amortization	(9,431)	(11,445)
Lease Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	$ 34,906	$ 6,799