SCHEDULE OF PORTFOLIO INVESTMENTS (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2015 USD ($)
Schedule Of Investments [Line Items]
Investment net of asset, percentage	100.00%
Investment, cost	$ 33,723,765
Investment at cost, percentage	100.35%
Liabilities in excess of other assets, percentage	(0.35%)
7.75% Series A Preferred Stock | Industrial Real Estate Investment Trusts | CubeSmart
Schedule Of Investments [Line Items]
Preferred stock dividend percentage	7.75%
Self Storage Properties
Schedule Of Investments [Line Items]
Investment net of asset, percentage	81.82%
Investment, cost	$ 27,725,000
Other | RMR Asia Pacific Fund Fractional Shares
Schedule Of Investments [Line Items]
Investment net of asset, percentage	0.00%
Investment, cost	$ 0
Other | SSG Operations LLC
Schedule Of Investments [Line Items]
Investment net of asset, percentage	0.06%
Investment, cost	$ 24,573
Real Estate Investment Trusts | 8.25% Series A Preferred Stock | Retail Real Estate Investment Trusts | Pennsylvania Real Estate Investment Trust
Schedule Of Investments [Line Items]
Preferred stock dividend percentage	8.25%
Real Estate Investment Trusts | 6.625% Series F Preferred Stock | Retail Real Estate Investment Trusts | Realty Income Corp
Schedule Of Investments [Line Items]
Preferred stock dividend percentage	6.625%
Wholly Owned Subsidiaries
Schedule Of Investments [Line Items]
Investment net of asset, percentage	81.88%
Investment, cost	$ 27,749,573
Real Estate Owned
Schedule Of Investments [Line Items]
Investment net of asset, percentage	81.82%
Common stock, par value
Schedule Of Investments [Line Items]
Investment net of asset, percentage	7.34%
Investment, cost	$ 1,360,102
Common stock, par value | Real Estate Investment Trusts
Schedule Of Investments [Line Items]
Investment net of asset, percentage	7.34%
Common stock, par value | Real Estate Investment Trusts | Diversified Real Estate Investment Trusts
Schedule Of Investments [Line Items]
Investment net of asset, percentage	1.58%
Common stock, par value | Real Estate Investment Trusts | Industrial Real Estate Investment Trusts
Schedule Of Investments [Line Items]
Investment net of asset, percentage	5.76%
Preferred Stocks
Schedule Of Investments [Line Items]
Investment net of asset, percentage	2.79%
Investment, cost	$ 1,087,753
Preferred Stocks | Real Estate Investment Trusts
Schedule Of Investments [Line Items]
Investment net of asset, percentage	2.79%
Preferred Stocks | Real Estate Investment Trusts | Industrial Real Estate Investment Trusts
Schedule Of Investments [Line Items]
Investment net of asset, percentage	0.93%
Preferred Stocks | Real Estate Investment Trusts | Retail Real Estate Investment Trusts
Schedule Of Investments [Line Items]
Investment net of asset, percentage	1.86%
Short-term Investments
Schedule Of Investments [Line Items]
Investment net of asset, percentage	8.34%
Short-term Investments | S Sg A Money Market Fund
Schedule Of Investments [Line Items]
Investment, cost	$ 3,526,337
Annualized yield, period	7 days
Annualized yield, percentage	0.01%