SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) Employee Room Property	Jun. 30, 2019 USD ($) Employee Segment Room Property	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Accounting Policies [Abstract]
Number of employees | Employee	197	197
Office, retail, multifamily, and mixed-use operating properties | Property	28	28
Properties held for development | Property	3	3
Number of operating segments | Segment		4
Room in mixed-use segment all-suite hotel | Room	369	369
Lease, practical expedient, lease and non-lease components	$ 8,600	$ 16,400
Right-of-use lease asset	6,278	6,278	$ 7,700	$ 0
Lease liability	6,942	6,942	7,700	0
Straight-line rent liability	$ 13,725	$ 13,725	$ 800	$ 7,393