REAL ESTATE AND RELATED LEASE INTANGIBLES, NET - Unaudited Pro Forma (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Operating lease income									$ 56,649,278	$ 37,394,416	$ 8,331,338
Net income	11,806,000	37,176,000	30,243,000	18,401,000	19,744,000	21,187,000	59,752,000	88,050,000	97,626,251	188,733,086	169,454,280
Net (income) loss attributable to noncontrolling interest in consolidated joint ventures									368,670	1,098,150	49,084
Net income attributable to preferred and common unit holders										189,831,236	169,503,364
Net loss attributable to predecessor unitholders	0	0	0	12,628,000	21,540,000	20,162,000	60,107,000	88,023,000	12,628,031	189,831,236	169,503,364
Net (income) loss attributable to noncontrolling interest in operating partnership	(7,350,000)	(22,827,000)	(17,691,000)	(18,568,000)					(66,436,274)
Net income attributable to Class A common shareholders	4,374,000	14,656,000	12,505,000	12,652,000					44,186,678
Acquisitions
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Operating lease income									20,079,460	34,184,780	34,387,525
Net income									5,222,032	4,880,518	5,030,503
Net (income) loss attributable to noncontrolling interest in consolidated joint ventures									256,930	(107,046)	(1,160,377)
Net income attributable to preferred and common unit holders										95,469	3,870,126
Net loss attributable to predecessor unitholders									0
Net (income) loss attributable to noncontrolling interest in operating partnership									(2,684,691)
Net income attributable to Class A common shareholders									2,794,271
Consolidated Pro Forma
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Operating lease income									76,728,738	71,579,196	42,718,863
Net income									102,848,283	193,613,604	174,484,783
Net (income) loss attributable to noncontrolling interest in consolidated joint ventures									625,600	991,104	(1,111,293)
Net income attributable to preferred and common unit holders										189,926,705	173,373,490
Net loss attributable to predecessor unitholders									12,628,031
Net (income) loss attributable to noncontrolling interest in operating partnership									(69,120,965)
Net income attributable to Class A common shareholders									$ 46,980,949