Securities Available for Sale - Summary of Investments in Debt and Equity Securities (Details) - USD ($)		Sep. 30, 2016		Sep. 30, 2015
Total Securities Available for Sale, Estimated Market Value		$ 73,604,894		$ 54,541,237
Available-for-sale Securities [Member]
Total Securities Available for Sale, Cost		60,662,627		59,982,840
Total Securities Available for Sale, Estimated Market Value		$ 73,604,894		$ 54,541,237
Government National Mortgage Association [Member] | Available-for-sale Securities [Member]
Modified Pass-Through Mortgage-Backed Securities, Interest Rate		6.50%		6.50%
Modified Pass-Through Mortgage-Backed Securities, Number of Shares		500,000		500,000
Modified Pass-Through Mortgage-Backed Securities, Cost		$ 5,252		$ 6,240
Modified Pass-Through Mortgage-Backed Securities, Estimated Market Value		5,550		6,669
Preferred Stock [Member]
Equity securities available for sale, Cost		12,992,742		13,844,808
Equity Securities available for sale, Estimated Market Value		13,769,073		14,961,994
Common Stock [Member]
Equity securities available for sale, Cost		47,664,633		46,131,792
Equity Securities available for sale, Estimated Market Value		$ 59,830,271		$ 39,572,574
CBL & Associates Properties, Inc [Member] | Series D Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.375%		7.375%
Equity securities available for sale, Number of Shares		30,000		30,000
Equity securities available for sale, Cost		$ 745,840		$ 745,840
Equity Securities available for sale, Estimated Market Value		$ 750,300		$ 750,900
Cedar Realty Trust, Inc [Member] | Series B Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.25%		7.25%
Equity securities available for sale, Number of Shares		30,600		30,600
Equity securities available for sale, Cost		$ 718,317		$ 718,317
Equity Securities available for sale, Estimated Market Value		$ 786,417		$ 727,975
Chesapeake Lodging Trust [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.75%		7.75%
Equity securities available for sale, Number of Shares		20,000		20,000
Equity securities available for sale, Cost		$ 500,000		$ 500,000
Equity Securities available for sale, Estimated Market Value		$ 518,050		$ 520,000
Dynex Capital, Inc [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		8.50%		8.50%
Equity securities available for sale, Number of Shares		10,000		10,000
Equity securities available for sale, Cost		$ 250,000		$ 250,000
Equity Securities available for sale, Estimated Market Value		$ 252,850		$ 241,000
Investors Real Estate Trust [Member] | Series B Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.95%		7.95%
Equity securities available for sale, Number of Shares		20,000		20,000
Equity securities available for sale, Cost		$ 500,000		$ 500,000
Equity Securities available for sale, Estimated Market Value		$ 516,000		$ 515,200
iStar Financial, Inc [Member] | Series D Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		8.00%		8.00%
Equity securities available for sale, Number of Shares		3,468		3,468
Equity securities available for sale, Cost		$ 71,502		$ 71,502
Equity Securities available for sale, Estimated Market Value		$ 84,688		$ 83,406
iStar Financial, Inc [Member] | Series E Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.875%		7.875%
Equity securities available for sale, Number of Shares		3,400		3,400
Equity securities available for sale, Cost		$ 54,116		$ 54,116
Equity Securities available for sale, Estimated Market Value		$ 83,300		$ 80,410
iStar Financial, Inc [Member] | Series F Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		8.00%		8.00%
Equity securities available for sale, Number of Shares		20,000		20,000
Equity securities available for sale, Cost		$ 429,846		$ 429,846
Equity Securities available for sale, Estimated Market Value		$ 487,400		$ 470,200
iStar Financial, Inc [Member] | Series I Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.50%		7.50%
Equity securities available for sale, Number of Shares		41,383		41,383
Equity securities available for sale, Cost		$ 872,236		$ 872,236
Equity Securities available for sale, Estimated Market Value		$ 1,005,607		$ 953,464
Pennsylvania Real Estate Investment Trust [Member] | Series B Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				7.375%
Equity securities available for sale, Number of Shares				30,455
Equity securities available for sale, Cost				$ 760,911
Equity Securities available for sale, Estimated Market Value				$ 772,034
Pennsylvania Real Estate Investment Trust [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		8.25%		8.25%
Equity securities available for sale, Number of Shares		44,000		44,000
Equity securities available for sale, Cost		$ 1,100,885		$ 1,100,885
Equity Securities available for sale, Estimated Market Value		$ 1,128,380		$ 1,150,600
Summit Hotel Properties, Inc [Member] | Series B Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		7.875%		7.875%
Equity securities available for sale, Number of Shares		10,000		10,000
Equity securities available for sale, Cost		$ 250,000		$ 250,000
Equity Securities available for sale, Estimated Market Value		$ 263,081		$ 260,000
UMH Properties, Inc [Member] | Series B Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate	[1]	8.00%
Equity securities available for sale, Number of Shares	[1]	100,000
Equity securities available for sale, Cost	[1]	$ 2,500,000
Equity Securities available for sale, Estimated Market Value	[1]	$ 2,755,000
UMH Properties, Inc [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate		8.25%	[1]	8.25%
Equity securities available for sale, Number of Shares		200,000	[1]	200,000
Equity securities available for sale, Cost		$ 5,000,000	[1]	$ 5,000,000
Equity Securities available for sale, Estimated Market Value		$ 5,138,000	[1]	$ 5,136,000
UMH Properties, Inc [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares		989,326	[1]	911,871
Equity securities available for sale, Cost		$ 9,305,685	[1]	$ 8,528,097
Equity Securities available for sale, Estimated Market Value		$ 11,792,771	[1]	$ 8,480,399
Gladstone Commercial Corporation [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares		65,000		65,000
Equity securities available for sale, Cost		$ 1,102,608		$ 1,102,608
Equity Securities available for sale, Estimated Market Value		$ 1,210,950		$ 917,150
Government Properties Income Trust [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares		700,000		579,000
Equity securities available for sale, Cost		$ 12,585,316		$ 11,572,547
Equity Securities available for sale, Estimated Market Value		$ 15,834,000		$ 9,264,000
Select Income REIT [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares		586,500		586,500
Equity securities available for sale, Cost		$ 13,112,908		$ 13,247,860
Equity Securities available for sale, Estimated Market Value		$ 15,776,850		$ 11,149,365
Senior Housing Property Trust [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares		670,000		402,300
Equity securities available for sale, Cost		$ 11,558,116		$ 7,643,503
Equity Securities available for sale, Estimated Market Value		$ 15,215,700		$ 6,517,260
Campus Crest Communities, Inc [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				8.00%
Equity securities available for sale, Number of Shares				10,000
Equity securities available for sale, Cost				$ 250,000
Equity Securities available for sale, Estimated Market Value				$ 243,300
Condor Hospitality [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				8.00%
Equity securities available for sale, Number of Shares				17,000
Equity securities available for sale, Cost				$ 170,005
Equity Securities available for sale, Estimated Market Value				$ 108,800
Corporate Office Properties Trust [Member] | Series L Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				7.375%
Equity securities available for sale, Number of Shares				26,688
Equity securities available for sale, Cost				$ 658,957
Equity Securities available for sale, Estimated Market Value				$ 680,544
EPR Properties [Member] | Series F Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				6.625%
Equity securities available for sale, Number of Shares				15,000
Equity securities available for sale, Cost				$ 352,908
Equity Securities available for sale, Estimated Market Value				$ 369,750
General Growth Properties, Inc [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				6.375%
Equity securities available for sale, Number of Shares				4,636
Equity securities available for sale, Cost				$ 107,852
Equity Securities available for sale, Estimated Market Value				$ 112,469
Grace Acquisitions I [Member] | Series B Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				8.75%
Equity securities available for sale, Number of Shares				29,000
Equity securities available for sale, Cost				$ 3,480
Equity Securities available for sale, Estimated Market Value				$ 696,000
Kilroy Realty Corporation [Member] | Series H Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				6.375%
Equity securities available for sale, Number of Shares				23,016
Equity securities available for sale, Cost				$ 547,953
Equity Securities available for sale, Estimated Market Value				$ 575,142
Sun Communities, Inc [Member] | Series A Preferred Stock [Member]
Equity securities available for sale, Dvidend Rate				7.125%
Equity securities available for sale, Number of Shares				20,000
Equity securities available for sale, Cost				$ 500,000
Equity Securities available for sale, Estimated Market Value				$ 514,800
Getty Realty Corporation [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares				50,000
Equity securities available for sale, Cost				$ 997,632
Equity Securities available for sale, Estimated Market Value				$ 790,000
Mack-Cali Realty Corporation [Member] | Common Stock [Member]
Equity securities available for sale, Number of Shares				130,000
Equity securities available for sale, Cost				$ 3,039,545
Equity Securities available for sale, Estimated Market Value				$ 2,454,400

[1] Investment is in a related company. See Note No. 11 for further discussion.