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MORTGAGES PAYABLE AND LINE OF CREDIT, Mortgages Payable (Details) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jan. 31, 2016 USD ($) Loan | Apr. 30, 2015 USD ($)
Aggregate amount of required future principal payments on mortgages payable [Abstract] |  |
Total payments | $ 761,645 | $ 668,112
Mortgages Payable [Member] |  |
Mortgages Payable [Abstract] |  |
Interest rates on mortgages payable range, minimum | 2.73% |
Interest rates on mortgages payable range, maximum | 7.94% |
Mortgages maturity date | Jul. 01, 2036 |
Number of loans in default | Loan | 0 |
Fixed rate mortgages | $ 671,600 | 629,800
Variable rate mortgages | $ 90,000 | $ 38,300
Weighted average rate of interest on mortgage debt, excluding HFS | 4.80% | 4.95%
Aggregate amount of required future principal payments on mortgages payable [Abstract] |  |
2016 (remainder) | $ 46,710 |
2017 | 43,543 |
2018 | 41,229 |
2019 | 116,598 |
2020 | 111,490 |
Thereafter | 402,075 |
Total payments | 761,645 |
Mortgages Payable [Member] | Assets Held for Sale [Member] |  |
Mortgages Payable [Abstract] |  |
Minimum future principal payments | $ 10,700 |

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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