Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Geographic and Asset Type Concentration (Details) - Sales Revenue, Net [Member]	6 Months Ended
	Jun. 30, 2016
Hotel [Member] | Real Estate Asset Concentration Risk [Member]
Real Estate Properties [Line Items]
Concentration Risk, Percentage	45.00%
Multifamily [Member] | Real Estate Asset Concentration Risk [Member]
Real Estate Properties [Line Items]
Concentration Risk, Percentage	29.00%
Student Housing [Member] | Real Estate Asset Concentration Risk [Member]
Real Estate Properties [Line Items]
Concentration Risk, Percentage	21.00%
HAWAII | Geographic Concentration Risk [Member]
Real Estate Properties [Line Items]
Concentration Risk, Percentage	45.00%
FLORIDA | Geographic Concentration Risk [Member]
Real Estate Properties [Line Items]
Concentration Risk, Percentage	15.00%