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PROPERTY OWNED (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2014
PROPERTY OWNED [Abstract] |  |  |
Property owned net | $ 1,368,582 | $ 1,056,270 |
Capitalized interest during construction | 4,900 | $ 4,900 | $ 2,900
Future minimum lease receipts to be received under non-cancellable leases [Abstract] |  |  |
2017 | 28,558 |  |
2018 | 26,235 |  |
2019 | 22,289 |  |
2020 | 18,423 |  |
2021 | 17,216 |  |
Thereafter | 112,551 |  |
Total | $ 225,272 |  |

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- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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