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	Sep. 30, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	$ 214	$ 518
Accumulated amortization	(945)	(981)
Below market leases	62,126	63,172
Accumulated accretion	(35,639)	(37,220)
Acquired lease intangible liabilities, net	26,487	25,952
Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	33,051	6,799
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	63,932	40,884
Accumulated amortization	(31,095)	(34,603)
Above market leases
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	7,534	11,963
Accumulated amortization	$ (7,320)	$ (11,445)