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ORGANIZATION (Details) $ in Thousands, ft² in Millions		3 Months Ended		9 Months Ended
	Jan. 15, 2015	Sep. 30, 2017 USD ($) ft² property	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) ft² property	Sep. 30, 2016 USD ($)
Real Estate Properties [Line Items]
Area of real estate property (in sq ft) | ft²		16.7		16.7
Noncontrolling interest percentage		10.27454%		8.98167%
Transaction costs | $		$ 95	$ 223	$ 278	$ 307
Vornado
Real Estate Properties [Line Items]
Noncontrolling interest percentage	5.40%			89.90%
Warehouses
Real Estate Properties [Line Items]
Number of real estate properties		1		1
Wholly owned properties | Shopping Center
Real Estate Properties [Line Items]
Number of real estate properties		85		85
Wholly owned properties | Mall
Real Estate Properties [Line Items]
Number of real estate properties		4		4

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Area of a real estate property.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

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