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SHARE-BASED COMPENSATION - Share-based Compensation Expense (Details) - General and Administrative Expense - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total Share-based compensation expense	$ 1,359	$ 879	$ 4,080	$ 9,148
OPP Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total Share-based compensation expense	308	43	901	134
Omnibus Share Plan 2015 [Member] | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total Share-based compensation expense	352	82	968	145
Omnibus Share Plan 2015 [Member] | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total Share-based compensation expense	604	552	1,833	1,338
Omnibus Share Plan 2015 [Member] | LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total Share-based compensation expense	95	202	378	7,531
Vornado's OPP Plan | LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total Share-based compensation expense	$ 35	$ 43	$ 112	$ 134

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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