Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment property, net	$ 5,469,481	$ 3,721,115
Other assets, net	146,450	213,030
Secured debt	2,819,567	2,125,267
Other liabilities	$ 279,667	$ 184,859
Series A Preferred Stock, Par Value	$ 0.01	$ 0.01
Series A Preferred Stock, Shares Issued	3,400,000	3,400,000
Series A Preferred Stock, Shares Outstanding	3,400,000	3,400,000
Common Stock, Par Value	$ 0.01	$ 0.01
Common Stock, Shares Authorized	180,000,000	180,000,000
Common Stock, Shares Issued	732,016,000	58,395,000
Common Stock, Shares Outstanding	73,206	58,395
Variable Interest Entity, Primary Beneficiary [Member]
Investment property, net	$ 88,987	$ 92,009
Other assets, net	3,054	3,823
Secured debt	62,111	64,082
Other liabilities	$ 1,998	$ 4,091
Series A-4 Preferred Stock [Member]
Series A Preferred Stock, Shares Outstanding		6,364,770
Series A-4 Preferred Stock, Par Value	$ 0.01	$ 0.01
Series A-4 Preferred Stock, Shares Issued	1,681,000	2,067,000
Series A-4 Preferred Stock, Shares Outstanding	1,681,000	2,067,000