Investments in Unconsolidated Real Estate Joint Ventures (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 91,132	$ 75,223
Alexan CityCentre [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	7,733	6,505
Alexan Southside Place [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	17,322	17,322
APOK Townhomes [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	7,569	0
Helios, formerly known as Cheshire Bridge [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	16,360	16,360
Name [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	5,249	3,806
EOS [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	0	3,629
Flagler Village [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	14,035	5,451
Lake Boone Trail [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	9,919	9,919
West Morehead [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	13	0
Whetstone [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 12,932	$ 12,231