INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES - Summary of Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Real estate under development	$ 647,142		$ 647,142		$ 609,574
Investments in and advances to unconsolidated affiliates	284,238		284,238		173,277
Total assets	3,235,040		3,235,040		3,032,319
Other liabilities	109,351		109,351		31,000
Total liabilities and equity	3,235,040		3,235,040		3,032,319
Distributions in excess of income from, and investments in, unconsolidated affiliates	(24,013)		(24,013)		(13,244)
Total revenues	51,333	$ 53,161	104,016	$ 105,642
Operating Expenses	(34,482)	(40,122)	(72,676)	(77,455)
Equity in earnings of unconsolidated affiliates	1,740	3,406	3,694	9,999
Depreciation and amortization	(14,678)	(13,903)	(31,527)	(27,561)
Operating Partnership, as General Partner or Managing Member
Schedule of Equity Method Investments [Line Items]
Equity in earnings of unconsolidated affiliates	1,740	20,511	3,694	27,104
Company’s share of net income	1,838	20,609	3,890	27,300
Amortization of Excess Investment	(98)	(98)	(196)	(196)
Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Rental property, net	723,344		723,344		302,976
Real estate under development	40,830		40,830		35,743
Investments in and advances to unconsolidated affiliates	6,853		6,853		6,853
Other assets	86,321		86,321		47,083
Total assets	857,348		857,348		392,655
Loans Payable to Bank	440,407		440,407		192,684
Other liabilities	27,266		27,266		21,945
Partners’ equity	389,675		389,675		178,026
Total liabilities and equity	857,348		857,348		$ 392,655
Total revenues	19,022	10,342	32,394	22,015
Operating Expenses	(7,286)	(3,102)	(11,016)	(6,833)
Interest Expense	(3,377)	(2,259)	(6,113)	(4,897)
Equity in earnings of unconsolidated affiliates	0	0	0	66,655
Depreciation and amortization	(4,984)	(2,787)	(8,864)	(5,037)
Gain on disposition of property	0	25,208	0	25,208
Income from continuing operations	$ 3,375	$ 27,402	$ 6,401	$ 97,111