SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) Employee Segment Room Property	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Accounting Policies [Abstract]
Number of employees | Employee	186
Office, retail, multifamily, and mixed-use operating properties | Property	27
Properties held for development | Property	3
Number of operating segments | Segment	4
Room in mixed-use segment all-suite hotel | Room	369
Lease, practical expedient, lease and non-lease components	$ 7,800
Right-of-use lease asset	6,973	$ 7,700	$ 0
Lease liability	7,692	7,700	0
Straight-line rent liability	$ 7,929	$ 800	$ 7,393