Variable Interest Entities Variable Interest Entities Narrative Tagging (Details) (USD $)	Dec. 31, 2014 properties	Dec. 31, 2013 properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, gross	22,191,515	$ 21,549,927
Number of Variable Interest Entities	11	6
Consolidated Properties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, gross	7,400,000	7,100,000
Number of Variable Interest Entities	2	2
Unconsolidated Properties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Variable Interest Entities	9
Total Owners [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Owners	4
Related party owner [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Owners	1
Ashley Square [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, gross	5,078,342	5,078,342
Cross Creek [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property loan receivable, gross	6,976,087	$ 6,821,087