SEGMENT REPORTING - Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Capital expenditures	$ 23,391	$ 35,184	$ 49,086	$ 67,312
Office
Segment Reporting Information [Line Items]
Capital expenditures	19,812	30,051	40,537	56,717
Retail
Segment Reporting Information [Line Items]
Capital expenditures	1,645	3,697	4,170	7,257
Multifamily
Segment Reporting Information [Line Items]
Capital expenditures	1,216	1,315	2,529	2,886
Mixed-use
Segment Reporting Information [Line Items]
Capital expenditures	$ 718	$ 121	$ 1,850	$ 452