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RENTAL INCOME (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
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 |  |  |
2018 | $ 2,677,000 |  |
2019 | 2,353,000 |  |
2020 | 1,820,000 |  |
2021 | 1,059,000 |  |
2022 | 670,000 |  |
Thereafter | 812,000 |  |
Commercial Property Leases | 9,391,000 |  |
Aggregate contingent rentals from continuing operations | $ 784,000 | $ 642,000 | $ 616,000

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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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- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 + Details
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- Definition Future rental payments receivable within one year of the balance sheet date under an operating lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 + Details
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- Definition Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 + Details
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