Variable Interest Entities ("VIEs") - Summary of Investments in Unconsolidated Real Estate Funds (Details) $ in Thousands	Mar. 31, 2016 USD ($)
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	$ 26,880
Asset Management Fee and Other Receivable [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	765
Investment [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	26,880
Maximum Risk Of Loss [member]
Variable Interest Entity [Line Items]
Investments in unconsolidated real estate funds	$ 27,645