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SEGMENTS (Assets) (Details) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash, cash equivalents and restricted cash | $ 8,657,989 | $ 10,391,275 | $ 11,652,864 | $ 9,776,215
Other assets, net | 4,949,592 | 5,709,586 |  |
TOTAL ASSETS | 194,221,128 | 220,784,408 |  |
Operating Segments |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Land, buildings and improvements, net | 180,799,283 | 209,158,266 |  |
Significant Reconciling Items |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Cash, cash equivalents and restricted cash | 2,023,182 | 1,591,041 |  |
Other assets, net | 11,398,663 | 10,035,101 |  |
Office/Industrial Properties | Operating Segments |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Land, buildings and improvements, net | 103,838,473 | 126,421,648 |  |
TOTAL ASSETS | 103,584,934 | 131,180,612 |  |
Model Home Properties | Operating Segments |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Land, buildings and improvements, net | 47,369,007 | 48,466,371 |  |
TOTAL ASSETS | 50,721,230 | 51,389,400 |  |
Retail Properties | Operating Segments |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Land, buildings and improvements, net | 25,226,109 | 25,318,601 |  |
TOTAL ASSETS | $ 26,493,119 | $ 26,588,254 |  |

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 + Details
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