DISPOSITIONS OF REAL ESTATE ASSETS (Details) - USD ($)	1 Months Ended	3 Months Ended
	Jan. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on extinguishment of debt		$ 0	$ 22,840,000
Knollwood Mall [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds	$ 106,700,000
Mortgage debt	35,100,000
Gain on disposition	32,500,000
Escrow Deposit	$ 7,900,000			$ 2,300,000
Steeplegate Mall [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net outstanding balance			45,900,000
Gain on extinguishment of debt			$ 22,800,000.0