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EQUITY AND NONCONTROLLING INTEREST (Details)			1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 05, 2016 USD ($) $ / shares shares	Jan. 15, 2015	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2016 $ / shares shares	Sep. 30, 2015 $ / shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares	Dec. 31, 2015 $ / shares	Aug. 08, 2016 USD ($) $ / shares
Noncontrolling Interest [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.01	$ 0.01		$ 0.01		$ 0.01
Proceeds from issuance of common shares | $						$ (5,020,000)	$ 0
Distributions to redeemable NCI (in dollars per unit) | $ / shares				$ 0.20	$ 0.20	$ 0.60	$ 0.60
Common limited partnership units issued (in shares) | shares			5,700,000	5,700,000		5,700,000
Noncontrolling interest percentage				6.00%		6.00%
Conversion rate to common shares						1
ATM
Noncontrolling Interest [Line Items]
Common stock, par value (in dollars per share) | $ / shares									$ 0.01
Aggregate shares subscription price | $									$ 250,000,000
Common shares issued during period (in shares) | shares			172,403
Weighted average price of shares issued (in dollars per share) | $ / shares			$ 28.58
Proceeds from issuance of common shares | $			$ (4,900,000)
Commissions paid to distribution agencies | $			$ 100,000
ATM | Subsequent Event
Noncontrolling Interest [Line Items]
Common shares issued during period (in shares) | shares	134,939
Weighted average price of shares issued (in dollars per share) | $ / shares	$ 28.30
Proceeds from issuance of common shares | $	$ (3,800,000)
LTIP Units
Noncontrolling Interest [Line Items]
Award vesting period						2 years
Vornado
Noncontrolling Interest [Line Items]
Noncontrolling interest percentage		5.40%						94.00%
Noncontrolling Interest
Noncontrolling Interest [Line Items]
Noncontrolling interest percentage		5.00%

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Monetary value of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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Fees and commissions from underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, and other related consulting fees. Include fees and commissions from securities brokerage activities, from the sale and servicing of mutual funds, from the purchase and sale of securities and money market instruments where the bank is acting as agent for other banks or customers, and from the lending of securities owned by the bank or by bank customers (exclusive of trading revenue). Also includes the bank's proportionate share of the income or loss before extraordinary items and other adjustments from its investments in: unconsolidated subsidiaries, associated companies and corporate joint ventures, unincorporated joint ventures, general partnerships, and limited partnerships over which the bank exercises significant influence and that are principally engaged in investment banking, advisory, brokerage, or securities underwriting activities.

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