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INCOME TAXES - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) mall	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) mall	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Income Tax Contingency [Line Items]
Income tax expense	$ (319)	$ (394)	$ (349)	$ (1,399)
Deferred tax liability	$ (3,645)		$ (3,645)		$ (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 expense	$ 300	$ (400)	$ (300)	$ (1,400)

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 6
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