INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES - Summary of Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Real estate under development	$ 676,592		$ 676,592		$ 609,574
Investments in and advances to unconsolidated affiliates	273,576		273,576		173,277
Total assets	3,578,519		3,578,519		3,032,319
Other liabilities	108,828		108,828		31,000
Total liabilities and equity	3,578,519		3,578,519		3,032,319
Distributions in excess of income from, and investments in, unconsolidated affiliates	(24,249)		(24,249)		(13,244)
Total revenues	51,100	$ 56,852	155,116	$ 162,494
Operating Expenses	(42,601)	(37,917)	(115,277)	(115,372)
Equity in earnings of unconsolidated affiliates	(102)	2,195	3,592	12,194
Depreciation and amortization	(15,217)	(17,461)	(46,744)	(45,022)
Operating Partnership, as General Partner or Managing Member
Schedule of Equity Method Investments [Line Items]
Equity in earnings of unconsolidated affiliates	(102)	9,133	3,592	36,237
Company’s share of net income	377	9,231	4,267	36,531
Amortization of Excess Investment	(479)	(98)	(675)	(294)
Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Rental property, net	734,311		734,311		302,976
Real estate under development	23,486		23,486		35,743
Investments in and advances to unconsolidated affiliates	6,853		6,853		6,853
Other assets	95,264		95,264		47,083
Total assets	859,914		859,914		392,655
Loans Payable to Bank	499,899		499,899		192,684
Other liabilities	51,472		51,472		21,945
Partners’ equity	308,543		308,543		178,026
Total liabilities and equity	859,914		859,914		$ 392,655
Total revenues	26,590	10,712	58,984	32,727
Operating Expenses	(7,066)	(3,022)	(18,082)	(9,855)
Interest Expense	(5,242)	(2,183)	(11,355)	(7,080)
Equity in earnings of unconsolidated affiliates	0	0	0	66,655
Depreciation and amortization	(15,398)	(2,791)	(24,262)	(7,828)
(Loss) gain on disposition of property	(1,452)	7,416	(1,452)	32,623
Income from continuing operations	$ (2,568)	$ 10,132	$ 3,833	$ 107,242