OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Other Liabilities, Unclassified [Abstract]
Security deposits	$ 21,175	$ 20,351
Prepaid rent and other deferred income	13,242	13,855
Operating lease liabilities - ground leases	11,622	12,048
Operating lease liabilities - office leases	2,407	2,141
Acquired Below Market Lease Intangibles	8,637	8,616
Accumulated Amortization of Acquired Below Market Lease Intangibles	(5,351)	(4,494)
Acquired Below Market Lease Intangibles, Net of Accumulated Amortization	3,286	4,122
Interest rate swap liabilities	14,807	678
Prepaid tenant improvement reimbursements	1,003	56
Other liabilities	5,650	15,872
Total Other Liabilities	$ 73,192	$ 69,123