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, 2021	Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	$ 107	$ 121
Accumulated amortization	(1,349)	(1,213)
Below market leases	56,666	56,677
Accumulated accretion	(36,749)	(35,219)
Acquired lease intangible liabilities, net	19,917	21,458
Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	24,176	26,328
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	60,352	60,965
Accumulated amortization	(36,283)	(34,758)
Above market leases
Acquired Finite-Lived Intangible Assets [Line Items]
Leases, gross	4,543	5,389
Accumulated amortization	$ (4,436)	$ (5,268)