Variable Interest Entity Disclosure (Details) - Variable Interest Entity, Primary Beneficiary [Member] - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Total assets	[1]	$ 1,022,002	$ 470,730
Total equity		478,564	245,887
Total liabilities and equity		1,022,002	470,730
Net real property owned [Member]
Variable Interest Entity [Line Items]
Total assets		997,442	453,889
Cash and cash equivalents [Member]
Variable Interest Entity [Line Items]
Total assets		11,124	8,759
Receivables and other assets [Member]
Variable Interest Entity [Line Items]
Total assets		13,436	8,082
Secured Debt [Member]
Variable Interest Entity [Line Items]
Liabilities		450,944	147,021
Accrued expenses and other liabilities [Member]
Variable Interest Entity [Line Items]
Liabilities		15,460	7,732
Redeemable noncontrolling interests [Member]
Variable Interest Entity [Line Items]
Liabilities		$ 77,034	$ 70,090

[1] (1) Note that assets of the consolidated variable interest entities can only be used to settle obligations relating to such variable interest entities. Liabilities of the consolidated variable interest entities represent claims against the specific assets of the variable interest entities.