NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	Apr. 30, 2017	Apr. 30, 2016
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)	$ 1,924	$ 21,020
IRET - 71 France, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)	7,425	8,070
IRET-Cypress Court Apartments, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)	986	1,042
IRET-RED 20, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)		2,410
IRET-Williston Garden Apartments, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)	1,057	3,014
IRET-WRH 1, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)	(7,904)	5,266
WRH Holding, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)	$ 360	1,195
Other Noncontrolling Interests [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests – Operating Partnership (15,617,216 units at April 30, 2017 and 16,285,239 units at April 30, 2016)		$ 23