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RECENT REAL ESTATE TRANSACTIONS (Disposals of Properties) (Detail) |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 13, 2020 USD ($) | Feb. 05, 2020 USD ($) | Jul. 31, 2019 USD ($) | Jul. 01, 2019 USD ($) | May 08, 2019 USD ($) | Jan. 15, 2019 USD ($) | Mar. 31, 2020 USD ($) Property | Mar. 31, 2019 USD ($) Property | Sep. 30, 2018 USD ($) Property | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) Property | Oct. 31, 2017 Property
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of property |  |  |  |  |  |  |  |  |  | $ 6,300,000 |  |
No. of Properties | Property |  |  |  |  |  |  |  |  |  |  |  | 1
Mortgage notes issued for property acquired |  |  |  |  |  |  | $ 7,632,556 |  |  | 12,238,692 |  |
Disposed of real estate assets with net carrying value |  |  |  |  |  |  |  |  |  | 25,100,000 |  |
Genesis Plaza |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  | $ 2,900,000 |  |  |  |  |  |  |  |
Sale of interest in property |  |  |  | 43.00% |  |  |  |  |  |  |  |
Sale of property |  |  |  | $ 5,600,000 |  |  |  |  |  |  |  |
The Presidio |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  | $ 12,300,000 |  |  |  |  |  |  |  |  |
Gain (loss) on sale of property |  |  | $ 4,500,000 |  |  |  |  |  |  |  |  |
Centennial Tech Center | Discontinued Operations, Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  | $ 15,000,000 |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of property |  | $ (913,000) |  |  |  |  |  |  |  |  |  |
Union Terrace | Discontinued Operations, Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property | $ 11,300,000 |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of property | $ 688,000 |  |  |  |  |  |  |  |  |  |  |
Residential Properties |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  | $ 875,000 |  |  |  |  |  |  |
Gain (loss) on sale of property |  |  |  |  | $ (93,000) |  |  |  |  |  |  |
Residential Properties | Port Of San Diego Complex |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  |  |  |  |  | $ 24,800,000 |
Gain (loss) on sale of property |  |  |  |  |  |  |  |  |  |  | 10,000,000 |
Residential Properties | Yucca Valley Retail Center |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  |  |  |  |  | 7,800,000 |
Gain (loss) on sale of property |  |  |  |  |  |  |  |  |  |  | 1,400,000 |
Residential Properties | Pacific Oaks Plaza |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  |  |  |  |  | 3,900,000 |
Gain (loss) on sale of property |  |  |  |  |  |  |  |  |  |  | (232,000) |
Residential Properties | 33 Model Homes [Member] |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  |  |  |  | $ 13,000,000 | 12,600,000 |
Gain (loss) on sale of property |  |  |  |  |  |  |  |  |  |  | $ 988,000 |
No. of Properties | Property |  |  |  |  |  |  |  |  |  |  | 33 |
Residential Properties | Morena Office Center |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  | $ 5,600,000 |  |  |  |  |  |
Gain (loss) on sale of property |  |  |  |  |  | $ 700,000 |  |  |  |  |  |
Residential Properties | 41 Model Homes |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  |  |  | $ 14,600,000 |  |  |
Gain (loss) on sale of property |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |
No. of Properties | Property |  |  |  |  |  |  |  |  | 41 |  |  |
Residential Properties | 10 Model Homes |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
No. of Properties | Property |  |  |  |  |  |  | 10 |  |  |  |  |
Purchase price of property acquired |  |  |  |  |  |  | $ 3,600,000 |  |  |  |  |
Cash payment for the properties acquired |  |  |  |  |  |  | 1,100,000 |  |  |  |  |
Mortgage notes issued for property acquired |  |  |  |  |  |  | 2,500,000 |  |  |  |  |
Residential Properties | 8 Model Homes | Discontinued Operations, Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  | 215,000 |  |  |  |  |
Gain (loss) on sale of property |  |  |  |  |  |  | $ 2,800,000 |  |  |  |  |
No. of Properties | Property |  |  |  |  |  |  | 8 |  |  |  |  |
Residential Properties | 15 Model Homes | Discontinued Operations, Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of property |  |  |  |  |  |  |  | $ 514,000 |  |  |  |
Gain (loss) on sale of property |  |  |  |  |  |  |  | $ 5,800,000 |  |  |  |
No. of Properties | Property |  |  |  |  |  |  |  | 15 |  |  |  |

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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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