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RECENT REAL ESTATE TRANSACTIONS (Details) |  |  |  |  | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 13, 2020 USD ($) | Feb. 05, 2020 USD ($) | May 08, 2019 USD ($) | Jan. 15, 2019 USD ($) | Jun. 30, 2020 USD ($) property | Jun. 30, 2019 USD ($) property | Dec. 31, 2019 USD ($)
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Mortgage notes issued for property acquired |  |  |  |  | $ 8,250,821 |  | $ 12,238,692
Residential Real Estate |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Proceeds from sale of property |  |  | $ 875,000 |  |  |  |
Gain (loss) on sale of property |  |  | $ (93,000) |  |  |  |
Centennial Tech Center | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Proceeds from sale of property |  | $ 15,000,000.0 |  |  |  |  |
Gain (loss) on sale of property |  | $ (913,000) |  |  |  |  |
Union Terrace | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Proceeds from sale of property | $ 11,300,000 |  |  |  |  |  |
Gain (loss) on sale of property | $ 688,000 |  |  |  |  |  |
Model Home |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Number of properties | property |  |  |  |  | 17 | 18 |
Purchase price of property acquired |  |  |  |  | $ 6,300,000 | $ 6,100,000 |
Cash payment for the properties acquired |  |  |  |  | 1,900,000 | 1,800,000 |
Mortgage notes issued for property acquired |  |  |  |  | 4,400,000 | 4,300,000 |
Model Home | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  | 8,000,000.0 | 9,400,000 |
Gain (loss) on sale of property |  |  |  |  | $ 557,000 | $ 783,000 |
Number of properties | property |  |  |  |  | 21 | 26 |
Morena Office Center | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  | $ 5,600,000 |  |  |
Gain (loss) on sale of property |  |  |  | $ 700,000 |  |  |

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- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228 + Details
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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