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NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands | Apr. 30, 2015 | Apr. 30, 2014
--- | --- | ---
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | $ 30,519 | $ 22,638
IRET - 71 France, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 8,630 | 0
IRET-Cypress Court Apartments, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 1,089 | 1,127
IRET-RED 20, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 3,072 | 3,277
IRET-Williston Garden Apartments, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 3,090 | 2,804
IRET-Jamestown Medical Building, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 0 | 1,219
IRET-WRH 1, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 6,138 | 5,672
Mendota Properties LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | 7,294 | 7,333
WRH Holding, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Noncontrolling interests - consolidated real estate entities | $ 1,206 | $ 1,206

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