Summary of Fair Value of Financial Liabilities held on Condensed Consolidated Balance Sheets (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Mortgages payable and other secured financing	$ 50,778,452	$ 51,379,512
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Debt financing and LOCs	597,465,241	555,199,700
Mortgages payable and other secured financing	50,778,452	51,379,512
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value Inputs Liabilities Quantitative Information [Line Items]
Debt financing and LOCs	597,044,181	553,083,924
Mortgages payable and other secured financing	$ 50,791,949	$ 51,595,281