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	Mar. 31, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	$ 161	$ 183
Accumulated amortization	(1,113)	(1,031)
Below market leases	62,126	62,126
Accumulated accretion	(37,643)	(36,674)
Acquired lease intangible liabilities, net	24,483	25,452
Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	29,942	31,407
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	63,657	63,896
Accumulated amortization	(33,876)	(32,672)
Above market leases
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	7,534	7,534
Accumulated amortization	$ (7,373)	$ (7,351)