Investment in Unconsolidated Joint Ventures (EP II LLC) (Details) (EP II LLC [Member], USD $)	1 Months Ended	12 Months Ended
	Oct. 31, 2013	Dec. 31, 2013 Loan
Schedule of Equity Method Investments [Line Items]
Number of possible loan extensions		2
Period of loan extension		1 year
Equity Method Investment, Ownership Percentage		75.00%
Payments to Acquire Interest in Joint Venture	$ 5,600,000
Transfer from Predevelopment Assets to Investment in Joint Venture Related to EPI LLC Project	1,300,000
Maximum Amount Available Under Construction Facility Revised		46,000,000
Mortgage Loans on Real Estate, Carrying Amount of Mortgages		1,000
Debt Instrument, Basis Spread on Variable Rate		1.85%
Mortgage Loans on Real Estate, Final Maturity Date		Oct. 09, 2016
Extension of Mortgage Loans Maturity Conditions		two, one-year periods if certain conditions are met
Guarantor Obligations, Maximum Exposure, Undiscounted		8,600,000
Equity Method Investments Summarized Financial Information Cash		0
LIBOR [Member]
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Description of Variable Rate Basis		LIBOR
Gables Realty Limited [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		25.00%
Payments to Acquire Interest in Joint Venture	2,300,000
Guarantor Obligations, Maximum Exposure, Undiscounted		$ 2,900,000