INCOME TAXES - Narrative (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016 USD ($) mall	Mar. 31, 2016	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) mall	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Income Tax Contingency [Line Items]
Income tax benefit (expense)	$ 306		$ (464)	$ (30)	$ (1,005)
Deferred tax liability	$ (3,632)			$ (3,632)		$ (3,607)
Puerto Rico
Income Tax Contingency [Line Items]
Number of malls | mall	2			2
Vornado
Income Tax Contingency [Line Items]
Percentage of taxable income distributed as dividends to stockholders				100.00%
Commonwealth of Puerto Rico
Income Tax Contingency [Line Items]
Non-resident withholding tax percentage		29.00%
Gross receipts tax percentage		0.50%
Income tax benefit (expense)	$ 300		$ (500)	$ 0	$ (1,000)