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MORTGAGES PAYABLE AND CONSTRUCTION DEBT (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Oct. 31, 2016 USD ($) loan | Apr. 30, 2016 USD ($)
Aggregate amount of required future principal payments on mortgages payable [Abstract] |  |
Total payments | $ 779,568 | $ 812,393
Mortgages Payable [Member] |  |
Debt Instrument [Line Items] |  |
Interest rates on mortgages payable range, minimum (in hundredths) | 2.49% |
Interest rates on mortgages payable range, maximum (in hundredths) | 7.94% |
Mortgages maturity date range, end | Jul. 01, 2036 |
Number of loans in default | loan | 0 |
Fixed rate mortgages | $ 617,700 | 689,300
Variable rate mortgages | $ 226,900 | $ 196,800
Weighted average interest rate (in hundredths) | 4.55% | 4.54%
Mortgage indebtness | $ 844,600 |
Aggregate amount of required future principal payments on mortgages payable [Abstract] |  |
2017 (remainder) | 73,122 |
2018 | 64,747 |
2019 | 141,952 |
2020 | 94,259 |
2021 | 154,262 |
Thereafter | 255,448 |
Total payments | 783,790 |
Mortgages Payable [Member] | Assets Held for Sale [Member] |  |
Aggregate amount of required future principal payments on mortgages payable [Abstract] |  |
2017 (remainder) | 45,684 |
2018 | 819 |
2019 | 2,326 |
2020 | 668 |
2021 | 710 |
Thereafter | 10,588 |
Total payments | $ 60,795 |

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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