Variable Interest Entities ("VIEs") - Summary of Investments in Unconsolidated Real Estate Funds (Details) $ in Thousands	Jun. 30, 2016 USD ($)
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	$ 25,798
Investment [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	25,798
Asset Management Fee and Other Receivable [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	1,740
Maximum Risk Of Loss [member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	$ 27,538