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Segments (Assets) (Details) - USD ($) | Jun. 30, 2016 | Dec. 31, 2015 | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Segment Reporting Asset Reconciling Item [Line Items] |  |  |  |  |
Land, buildings and improvements, net |  | $ 240,408,714 | $ 238,341,934 |  |
Cash and cash equivalents |  | 5,518,204 | 6,626,423 | $ 11,471,805 | $ 5,636,002
Other assets, net |  | 5,595,570 | 5,895,991 |  |
TOTAL ASSETS |  | 252,262,170 | 254,274,393 |  |
Significant Reconciling Items [Member] |  |  |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |  |  |
Other assets, net |  | 6,335,252 | 9,306,036 |  |
Industrial Office Properties [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |  |  |
Land, buildings and improvements, net | [1] | 176,825,454 | 181,776,776 |  |
TOTAL ASSETS | [2] | 183,604,430 | 187,198,961 |  |
Residential Properties [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |  |  |
Land, buildings and improvements, net | [1] | 20,917,762 | 13,914,168 |  |
TOTAL ASSETS | [2] | 20,735,259 | 14,395,904 |  |
Retail Properties [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |  |  |
Land, buildings and improvements, net | [1] | 34,582,691 | 35,395,235 |  |
TOTAL ASSETS | [2] | $ 36,069,025 | $ 36,747,069 |  |
[1] | Includes lease intangibles and the land purchase option related to property acquisitions.
[2] | Includes land, buildings and improvements, current receivables, deferred rent receivables and deferred leasing costs and other related intangible assets, all shown on a net basis.

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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