Segments (Reconciliation to Net Income Loss) (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Revenues	$ 4,789,367	$ 4,601,741	$ 14,815,232	$ 12,963,072
Rental operating costs	1,691,280	1,502,140	4,841,809	4,167,180
OwnedPropertyManagementCosts	83,811	0	226,951	0
Asset Impairment Charges	1,500,000	358,000	1,500,000
Interest Income Mortgage Loans	14,901	21,010	44,215	57,533
Interest Income, Other	1,708	286,508	64,089	290,474
Gain on sale of real estate	169,460	81,695	1,026,371	180,770
Gain on dissolution of partnership interests	0	285,247	0	285,247
General and administrative	1,166,374	980,508	3,606,963	3,176,778
Interest expense	1,247,604	1,167,736	3,800,959	3,220,906
Depreciation and amortization	1,353,612	1,219,925	3,994,350	3,610,813
Income (loss) attributable to noncontrolling interests	236,653	139,068	875,264	339,422
Net (loss) income	(2,220,087)	(376,418)	(2,669,438)	(1,381,250)
Industrial Office Properties [Member]
Segment Reporting Information [Line Items]
Revenues	2,638,194	2,350,032	7,848,551	6,499,299
Rental operating costs	880,108	806,940	2,537,538	2,204,997
Operating Income (Loss)	1,758,086	1,543,092	5,311,013	4,294,302
Residential Properties [Member]
Segment Reporting Information [Line Items]
Revenues	696,922	731,188	2,327,340	2,113,044
Rental operating costs	25,722	75,185	178,556	259,426
Operating Income (Loss)	671,200	656,003	2,148,784	1,853,618
Retail Properties [Member]
Segment Reporting Information [Line Items]
Revenues	614,979	789,580	2,255,351	2,161,924
Rental operating costs	234,942	260,294	622,246	620,263
Operating Income (Loss)	380,037	529,286	1,633,105	1,541,661
Self Storage Properties [Member]
Segment Reporting Information [Line Items]
Revenues	839,272	730,947	2,383,990	2,188,805
Rental operating costs	466,697	359,722	1,276,518	1,082,494
Operating Income (Loss)	372,575	371,225	1,107,472	1,106,311
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 3,112,988	$ 3,120,616	$ 10,017,638	$ 8,853,425

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Interest income from mortgage loans.

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The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Costs incurred and are directly related to generating revenues from leased and rented property or equipment.

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The net gain (loss) resulting from the sale, transfer, termination, or other disposition of assets during the period, excluding transactions involving capital leases, assets-held- or available-for-lease, and other real estate owned which, to the extent appropriate, are included in gains (losses) on the disposition of assets in nonoperating income (expense).

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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Amount of income (loss) from continuing operations attributable to the noncontrolling interest. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings.

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Amount of interest income earned from interest bearing assets not separately disclosed.

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The net result for the period of deducting operating expenses from operating revenues.

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The aggregate costs related to management of owned properties during the reporting period.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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