LEASES - Narrative (Details)	3 Months Ended
	Mar. 31, 2020
Lessor, Lease, Description [Line Items]
Years, minimum term range of office and retail leases	3 years
Years, maximum term range of office and retail leases	10 years
Months, minimum term of apartment leases	7 months
Months, maximum term of apartment leases	15 months
Operating leases rental period terms	12 months
Minimum
Lessor, Lease, Description [Line Items]
Lease extension option period	3 years
Lease extension options exercise period	6 months
Maximum
Lessor, Lease, Description [Line Items]
Lease extension option period	10 years
Lease extension options exercise period	12 months
Land Mark At One Market [Member]
Lessor, Lease, Description [Line Items]
Lease extension option exercise period	5 years