Mortgage Payable and Other Secured Financing by Property Net of Deferred Financing Costs (Details) - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net		$ 51,379,512	$ 69,247,574
Period End Rate		3.83%	3.60%
Real Estate [Member] | Eagle Village [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net	[1]	$ 7,845,711	$ 8,037,133
Year Acquired	[1]	2010	2010
Debt instrument, maturity date	[1]	Sep. 01, 2018	Sep. 01, 2018
Variable / Fixed	[1]	Variable	Variable
Reset Frequency	[1]	Monthly	Monthly
Variable Based Rate	[1]	0.63%	0.25%
Facility Fees	[1]	3.00%	3.00%
Period End Rate	[1]	3.63%	3.25%
Real Estate [Member] | Residences at DeCordova [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net		$ 1,744,858	$ 1,807,246
Year Acquired		2012	2012
Debt instrument, maturity date		Jun. 01, 2017	Jun. 01, 2017
Variable / Fixed		Fixed	Fixed
Reset Frequency		N/A	N/A
Period End Rate		4.75%	4.75%
Real Estate [Member] | Residences at Weatherford [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net		$ 5,589,086	$ 5,820,623
Year Acquired		2011	2011
Debt instrument, maturity date		Jun. 01, 2017	Jun. 01, 2017
Variable / Fixed		Fixed	Fixed
Reset Frequency		N/A	N/A
Period End Rate		4.75%	4.75%
Real Estate [Member] | Jade Park [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net		$ 7,461,131
Year Acquired		2016
Debt instrument, maturity date		Oct. 01, 2021
Variable / Fixed		Fixed
Reset Frequency		N/A
Period End Rate		3.85%
Real Estate [Member] | Arboretum [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net			$ 16,683,146
Year Acquired			2011
Debt instrument, maturity date			Mar. 01, 2017
Variable / Fixed			Fixed
Reset Frequency			N/A
Period End Rate			3.75%
Real Estate [Member] | Woodland Park [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net	[1]		$ 7,500,000
Year Acquired	[1]		2014
Debt instrument, maturity date	[1]		Aug. 01, 2017
Variable / Fixed	[1]		Variable
Reset Frequency	[1]		Monthly
Variable Based Rate	[1]		0.19%
Facility Fees	[1]		2.75%
Period End Rate	[1]		2.94%
Mortgages payable [Member] | Real Estate [Member] | The 50/50 Student Housing--UNL [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net	[2]	$ 25,082,636	$ 25,363,647
Year Acquired	[2]	2013	2013
Debt instrument, maturity date	[2]	Mar. 01, 2020	Mar. 01, 2020
Variable / Fixed	[2]	Variable	Variable
Reset Frequency	[2]	Monthly	Monthly
Variable Based Rate	[2]	3.50%	3.25%
Period End Rate	[2]	3.50%	3.25%
Tax Increment Financing [Member] | Real Estate [Member] | The 50/50 Student Housing--UNL [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net		$ 3,656,090	$ 4,035,779
Year Acquired		2014	2014
Debt instrument, maturity date		Dec. 01, 2019	Dec. 01, 2019
Variable / Fixed		Fixed	Fixed
Reset Frequency		N/A	N/A
Period End Rate		4.65%	4.65%

[1] Variable rate is based on LIBOR

[2] Variable rate is based on Wall Street Journal Prime Rate