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UNCONSOLIDATED AFFILIATES AND COST METHOD INVESTMENT (Joint Venture Financings) (Details)	1 Months Ended							12 Months Ended
	Dec. 31, 2017 USD ($)	Oct. 31, 2017 USD ($) extension_option	Aug. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) extension_option	Jun. 30, 2016 USD ($)	Feb. 29, 2016 USD ($)	Jan. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) extension_option	Dec. 31, 2015 USD ($)	Dec. 31, 2018	Oct. 31, 2016
Debt Instrument [Line Items]
Amount Financed or Extended								$ 1,802,000	$ 0	$ 0
Monthly principal payments	$ 361,411,000							361,411,000
Mortgage and other indebtedness, net	4,230,845,000			$ 4,465,294,000				$ 4,230,845,000	$ 4,465,294,000
Ambassador Infrastructure, LLC
Debt Instrument [Line Items]
Percentage guaranteed by the company			100.00%					100.00%
Ambassador Infrastructure, LLC
Debt Instrument [Line Items]
Amount Financed or Extended			$ 11,035,000
Ambassador Infrastructure, LLC | Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of interest rate swaps held			$ 9,360,000
Fixed interest rate			3.74%
Ambassador Infrastructure, LLC | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate			2.00%
Shoppes at Eagle Point, LLC
Debt Instrument [Line Items]
Amount Financed or Extended		$ 36,400,000
Percentage guaranteed by the company		100.00%
Number of extension options available (extension option) | extension_option		1
Extension option, term		2 years
Shoppes at Eagle Point, LLC | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate		2.75%
Shoppes at Eagle Point, LLC | LIBOR | Scenario, Forecast
Debt Instrument [Line Items]
Stated Interest Rate											2.35%
Storage Facility Development - EastGate Mall
Debt Instrument [Line Items]
Amount Financed or Extended	$ 6,500,000
Percentage guaranteed by the company	100.00%
Monthly principal payments	$ 10,000							$ 10,000
Storage Facility Development - EastGate Mall | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate	2.75%							2.75%
The Pavilion at Port Orange
Debt Instrument [Line Items]
Amount Financed or Extended						$ 58,628,000
The Pavilion at Port Orange | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate						2.00%
Hammock Landing - Phase I
Debt Instrument [Line Items]
Amount Financed or Extended						$ 43,347,000	$ 39,475,000
Hammock Landing - Phase I | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate						2.00%
Hammock Landing - Phase II
Debt Instrument [Line Items]
Amount Financed or Extended						$ 16,757,000
Hammock Landing - Phase II | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate						2.00%
Triangle Town Center, Triangle Town Commons and Triangle Town Place
Debt Instrument [Line Items]
Amount Financed or Extended						$ 171,092,000
Number of extension options available (extension option) | extension_option				2					2
Extension option, term									1 year
Triangle Town Center, Triangle Town Commons and Triangle Town Place | If Extension One is Exercised
Debt Instrument [Line Items]
Debt instrument, lender fees						$ 5,000,000
Debt instrument, commitment fee percentage						0.50%
Triangle Town Center, Triangle Town Commons and Triangle Town Place | If Extension Two is Exercised
Debt Instrument [Line Items]
Debt instrument, lender fees						$ 8,000,000
Debt instrument, commitment fee percentage						0.75%
Triangle Town Center, Triangle Town Commons and Triangle Town Place | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate				4.00%		4.00%			4.00%	5.74%
Triangle Town Center, Triangle Town Commons and Triangle Town Place | LIBOR | If Extension Two is Exercised
Debt Instrument [Line Items]
Stated Interest Rate						5.737%
Fremaux Town Center JV, LLC
Debt Instrument [Line Items]
Amount Financed or Extended					$ 73,000,000
Fremaux Town Center JV, LLC | Construction loan
Debt Instrument [Line Items]
Mortgage and other indebtedness, net				$ 71,125,000					$ 71,125,000
Fremaux Town Center JV, LLC | Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of interest rate swaps held					73,000,000
Derivative liability					$ 52,130,000
Fremaux Town Center JV, LLC | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate					3.699%							3.699%
Ambassador Town Center JV, LLC
Debt Instrument [Line Items]
Amount Financed or Extended					$ 47,660,000
Ambassador Town Center JV, LLC | Construction loan
Debt Instrument [Line Items]
Mortgage and other indebtedness, net				41,885,000					41,885,000
Ambassador Town Center JV, LLC | Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of interest rate swaps held					47,660,000
Derivative liability					$ 38,866,000
Ambassador Town Center JV, LLC | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate					3.22%
The Shops at Friendly Center
Debt Instrument [Line Items]
Amount Financed or Extended				60,000,000
Mortgage and other indebtedness, net				$ 37,640,000					$ 37,640,000
Debt Instrument, Term				6 years
The Shops at Friendly Center | LIBOR
Debt Instrument [Line Items]
Stated Interest Rate				3.34%					3.34%
The Shops at Friendly Center | LIBOR | FIxed Rate Loan Maturing in January 2017
Debt Instrument [Line Items]
Stated Interest Rate				5.90%					5.90%
Port Orange and Hammock Landing - Phase I and II
Debt Instrument [Line Items]
Percentage guaranteed by the company						20.00%	25.00%
Extension option, term						1 year

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