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BASIS OF PRESENTATION AND ORGANIZATION Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Jan. 01, 2020
Restructuring Cost and Reserve [Line Items]
Provision for doubtful accounts	$ 1,701		$ (2)
Impairment of real estate	48,738		0
Adoption of ASU 2016-13				$ (18)
Outlet Collection, Riverwalk
Restructuring Cost and Reserve [Line Items]
Impairment of real estate	48,738		$ 0
Corporate Restructuring
Restructuring Cost and Reserve [Line Items]
Assets held for sale		$ 2,000,000
Restructuring charges	2,478
Corporate Restructuring \| Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	2,300
Corporate Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	4,300
Accumulated Deficit
Restructuring Cost and Reserve [Line Items]
Adoption of ASU 2016-13				$ (18)
One-time Termination Benefits \| Corporate Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,500	$ 34,300
COVID-19
Restructuring Cost and Reserve [Line Items]
Provision for doubtful accounts	1,600
COVID-19 \| Outlet Collection, Riverwalk
Restructuring Cost and Reserve [Line Items]
Impairment of real estate	$ 48,700