Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Land from VIEs	$ 355,343	$ 251,331
Buildings and equipment from VIEs	1,282,178	889,307
Less accumulated depreciation (including from VIEs)	(81,011)	(75,245)
Cash and Cash Equivalents	50,879	34,739
Restricted cash from VIEs	2,364	1,227
Tenant accounts receivable from VIEs	3,977	3,500
Deferred expenses from VIEs	9,610	10,022
Acquired intangible assets, net	112,718	86,471
Deferred rent receivables from VIEs	13,405	9,445
Prepaid expenses and other assets from VIEs	6,095	5,978
Mortgage notes and other debt payable, net	738,583	485,178
Accounts payable and other accrued expenses from VIEs	20,810	13,991
Accrued interest from VIEs	1,843	1,659
Accrued real estate taxes from VIEs	7,367	1,925
Accumulated stock issuance costs	110,357	66,233
Variable Interest Entity, Primary Beneficiary [Member]
Land from VIEs	25,441	32,645
Buildings and equipment from VIEs	151,298	187,505
Less accumulated depreciation (including from VIEs)	(16,748)	(23,146)
Cash and Cash Equivalents	11,034	13,365
Restricted cash from VIEs	1,033	666
Tenant accounts receivable from VIEs	1,444	1,724
Deferred expenses from VIEs	181	118
Acquired intangible assets, net	8,319	9,208
Deferred rent receivables from VIEs	860	852
Prepaid expenses and other assets from VIEs	293	373
Mortgage notes and other debt payable, net	109,803	141,972
Accounts payable and other accrued expenses from VIEs	1,465	2,058
Accrued interest from VIEs	398	560
Accrued real estate taxes from VIEs	$ 2,274	$ 802
Class A Shares [Member]
Common stock, par value	$ 0.01
Common Stock, shares authorized	200,000,000
Common Stock, Shares, Issued	61,960,821	37,092,768
Common stock, shares outstanding	61,960,821	37,092,768
Class M Shares [Member]
Common stock, par value	$ 0.01
Common Stock, shares authorized	200,000,000
Common Stock, Shares, Issued	34,152,734	27,909,411
Common stock, shares outstanding	34,152,734	27,909,411
Class A-I Shares [Member]
Common stock, par value	$ 0.01
Common Stock, shares authorized	200,000,000
Common Stock, Shares, Issued	10,466,992	6,116,812
Common stock, shares outstanding	10,466,992	6,116,812
Class M-I Shares [Member]
Common stock, par value	$ 0.01
Common Stock, shares authorized	200,000,000
Common Stock, Shares, Issued	6,031,998	3,356,619
Common stock, shares outstanding	6,031,998	3,356,619
Class D Shares [Member]
Common stock, par value	$ 0.01
Common Stock, shares authorized	200,000,000
Common Stock, Shares, Issued	7,876,212	7,787,823
Common stock, shares outstanding	7,876,212	7,787,823