Variable Interest Entity Disclosure (Details) - Variable Interest Entity, Primary Beneficiary [Member] - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Total assets	[1]	$ 1,012,199	$ 470,730
Total equity		362,585	245,887
Total liabilities and equity		1,012,199	470,730
Net Real Property Owned
Variable Interest Entity [Line Items]
Total assets		989,596	453,889
Cash and cash equivalents
Variable Interest Entity [Line Items]
Total assets		10,501	8,759
Receivables and other assets
Variable Interest Entity [Line Items]
Total assets		12,102	8,082
Secured Debt
Variable Interest Entity [Line Items]
Liabilities		450,255	147,021
Accrued expenses and other liabilities
Variable Interest Entity [Line Items]
Liabilities		13,803	7,732
Redeemable noncontrolling interests
Variable Interest Entity [Line Items]
Liabilities		$ 185,556	$ 70,090

[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.