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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES, Goodwill (Details) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2016 USD ($) property | Oct. 31, 2015 USD ($) property | Apr. 30, 2016 USD ($)
Goodwill [Line Items] |  |  |
Goodwill | $ 1,645,000 |  | $ 1,680,000
Goodwill, Impairment Loss | 0 |  | 0
Assets Held for Sale [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | $ 35,000 |  | $ 17,000
Commercial Properties [Member] |  |  |
Goodwill [Line Items] |  |  |
Number of real estate properties sold | property |  | 7 |
Goodwill derecognized |  | $ 193,000 |
Commercial Properties [Member] | Assets Held for Sale [Member] |  |  |
Goodwill [Line Items] |  |  |
Number of properties | property | 1 |  |
Goodwill derecognized | $ 17,000 |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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