ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES (Details) $ in Thousands	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($) property	Sep. 30, 2019 property	Sep. 20, 2017 property
Segment Reporting, Other Significant Reconciling Item [Line Items]
Deferred tenant revenue	$ 24,942	$ 26,224
Accrued capital expenditures and leasing costs	9,777	7,893
Accrued interest payable	9,958	9,729
Security deposits	6,129	5,814
Deferred tax liability, net(1)	283	5,137
Accrued payroll expenses	5,900	5,851
Other liabilities and accrued expenses	11,407	15,996
Total accounts payable, accrued expenses and other liabilities	$ 68,396	$ 76,644
Puerto Rico
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of real estate properties	2
Mall | Puerto Rico
Segment Reporting, Other Significant Reconciling Item [Line Items]
Number of real estate properties | property		2	2	2
Montehiedra Town Center
Segment Reporting, Other Significant Reconciling Item [Line Items]
Deferred tax liability, net(1)		$ 4,000
Montehiedra Town Center | Puerto Rico
Segment Reporting, Other Significant Reconciling Item [Line Items]
Deferred tax liability, net(1)	$ 10,300
Las Catalinas
Segment Reporting, Other Significant Reconciling Item [Line Items]
Deferred tax liability, net(1)		$ 1,100