Investment in Unconsolidated Entities (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015 USD ($) ft² Units	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) ft² Units	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Apr. 25, 2014 USD ($)	Feb. 03, 2014 USD ($)
Schedule of Equity Method Investments [Line Items]
Outside basis		$ 2,274		$ 2,274
Apartment units owned		12,786		12,786
Debt term				5 years
Construction loan		$ 0		$ 0
Partner contribution				76,061
Management fees revenue		$ 307	$ 179	$ 621	$ 267
Current Development [Member]
Schedule of Equity Method Investments [Line Items]
Apartment units owned | Units		564		564
Construction loan		$ 65,936		$ 65,936
Management fees revenue				1,060
Current Development [Member] | 350 8th [Member]
Schedule of Equity Method Investments [Line Items]
Outside basis		$ 1,656		$ 1,656
Apartment units owned | Units		410		410
Square feet of space | ft²		40,000		40,000
Purchase price				$ 46,600
Carrying value of partnership								$ 50,300
Debt term				5 years
Long-term Construction Loan						$ 143,600	$ 143,600
Partner contribution				$ 46,061
Management fees revenue				560
Current Development [Member] | 950 East Third [Member]
Schedule of Equity Method Investments [Line Items]
Outside basis		$ 618		$ 618
Apartment units owned | Units		472		472
Contribution of land value	[1]			$ 30,000
Management fees revenue				$ 500

[1] Land valued at $30.0 million was contributed by our partner, Legendary Investors Group No. 1 LLC ("Legendary"), to the partnership.