Segments (Reconciliation to Net Income Loss) (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Revenues	$ 4,344,491	$ 3,344,300	$ 12,192,209	$ 9,495,478
Rental operating costs	1,433,570	1,237,491	3,955,280	3,447,532
Interest Income Mortgage Loans	21,010	45,925	57,534	78,895
Interest Income, Other	286,514	8,680	290,474	23,301
Gain on sale of real estate	81,695	(32,424)	180,770	(56,911)
General and administrative	980,508	791,655	3,176,778	2,656,195
Interest expense	1,106,966	751,326	3,037,641	2,121,382
Depreciation and amortization	1,178,239	995,946	3,446,529	2,858,802
Net income (loss) from continuing operations	34,427	(409,937)	(895,241)	(1,543,148)
Income (loss) attributable to noncontrolling interests	114,051	57,740	277,159	258,737
Net loss	(376,418)	(417,597)	(1,381,250)	(1,686,801)
Industrial Office Properties [Member]
Segment Reporting Information [Line Items]
Revenues	2,350,032	1,805,193	6,499,299	4,904,303
Rental operating costs	806,940	742,206	2,204,997	1,983,374
Operating Income (Loss)	1,543,092	1,062,987	4,294,302	2,920,929
Residential Properties [Member]
Segment Reporting Information [Line Items]
Revenues	731,188	674,740	1,902,971	2,116,978
Rental operating costs	75,185	46,160	161,691	129,840
Operating Income (Loss)	656,003	628,580	1,741,280	1,987,138
Retail Properties [Member]
Segment Reporting Information [Line Items]
Revenues	532,324	287,065	1,601,133	779,674
Rental operating costs	191,723	109,354	506,101	287,350
Operating Income (Loss)	340,601	177,711	1,095,032	492,324
Self Storage Properties [Member]
Segment Reporting Information [Line Items]
Revenues	730,947	577,302	2,188,806	1,694,523
Rental operating costs	359,722	339,771	1,082,491	1,046,968
Operating Income (Loss)	371,225	237,531	1,106,315	647,555
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 2,931,931	$ 2,152,734	$ 8,294,463	$ 6,126,841

Interest income from mortgage loans.

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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 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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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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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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