SEGMENT REPORTING - Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Capital expenditures	$ 27,155	$ 21,743	$ 94,467	$ 58,797
Office
Segment Reporting Information [Line Items]
Capital expenditures	24,107	17,601	80,824	48,471
Retail
Segment Reporting Information [Line Items]
Capital expenditures	2,165	1,317	9,422	4,817
Multifamily
Segment Reporting Information [Line Items]
Capital expenditures	686	2,121	3,572	4,117
Mixed-use
Segment Reporting Information [Line Items]
Capital expenditures	$ 197	$ 704	$ 649	$ 1,392