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RENTAL INCOME (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
RENTAL INCOME |  |  |
Percentage of rental income related to residential apartments and condominium units with leases of one year or less | 94.00% |  |
Maximum period of non-cancelable operating lease | 1 year |  |
Percentage of rental income related to commercial properties | 6.00% |  |
Minimum future rental income |  |  |
2020 | $ 2,826,000 |  |
2021 | 2,291,000 |  |
2022 | 1,871,000 |  |
2023 | 1,117,000 |  |
2024 | 459,000 |  |
Thereafter | 680,000 |  |
Commercial Property Leases | 9,244,000 |  |
Aggregate contingent rentals from continuing operations | $ 629,000 | $ 784,000 | $ 642,000

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- Definition Represents the maximum period of non-cancellable operating leases for residential apartments and condominium units. + References No definition available. + Details
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- Definition Represents the percentage of rental income related to commercial real estate property. + References No definition available. + Details
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- Definition Represents the percentage of rental income related to residential real estate property. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of lease payments to be received by lessor for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of lease payments to be received by lessor in remainder of fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of lease payments to be received by lessor after fifth fiscal year following latest statement of financial position date for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
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- Definition Amount of contingent rental revenue recognized for the period under lease, based on the occurrences of an event or condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 + Details
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