LEASES - Narrative (Details)	12 Months Ended
	Dec. 31, 2019 lease
Lessee, Lease, Description [Line Items]
Number of ground leases considered operating lease	6
Minimum
Lessee, Lease, Description [Line Items]
Lease terms	9 years
Maximum
Lessee, Lease, Description [Line Items]
Lease terms	65 years