Investments in Unconsolidated Real Estate Joint Ventures (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 75,223	$ 18,331
Alexan CityCentre [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	6,505	6,505
Alexan Southside Place [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	17,322	0
Cheshire Bridge [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	16,360	0
Domain [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	3,806	0
EOS [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	3,629	3,629
Flagler Village [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	5,451	0
Lake Boone Trail [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	9,919	0
Villas at Oak Crest [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	0	3,170
Whetstone [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	12,231	0
Hundred Berry Hill [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	0	4,906
Others [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 0	$ 121