Variable Interest Entity Disclosure (Details) - Variable Interest Entity, Primary Beneficiary [Member] - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Total assets	[1]	$ 1,045,618	$ 1,012,199
Total equity		375,751	362,585
Total liabilities and equity		1,045,618	1,012,199
Net real property owned [Member]
Variable Interest Entity [Line Items]
Total assets		1,019,154	989,596
Cash and cash equivalents [Member]
Variable Interest Entity [Line Items]
Total assets		10,180	10,501
Receivables and other assets [Member]
Variable Interest Entity [Line Items]
Total assets		16,284	12,102
Secured Debt [Member]
Variable Interest Entity [Line Items]
Liabilities		473,781	450,255
Accrued expenses and other liabilities [Member]
Variable Interest Entity [Line Items]
Liabilities		15,396	13,803
Redeemable noncontrolling interests [Member]
Variable Interest Entity [Line Items]
Liabilities		$ 180,690	$ 185,556

[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.