SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Jul. 31, 2017 USD ($) segment	Jul. 31, 2016 USD ($)	Apr. 30, 2015 segment	Apr. 30, 2017 USD ($)	Apr. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2		5
Segment revenues and net operating income [Abstract]
Real estate revenue	$ 52,735	$ 49,611
Real estate expenses	24,250	21,634
Net operating income (loss)	28,485	27,977
Depreciation/amortization	(28,927)	(14,267)
Impairment of real estate investments	(256)	(54,153)
General and administrative expenses	(4,002)	(3,501)
Interest expense	(9,295)	(10,364)
Loss on extinguishment of debt	(199)
Interest and other income	231	188
Loss before gain on sale of real estate and other investments and income from discontinued operations	(13,963)	(54,120)
Gain (loss) on sale of real estate and other investments	124	8,958
Loss from continuing operations	(13,839)	(45,162)
Income (loss) from discontinued operations	560	4,568
NET LOSS	(13,279)	(40,594)
Segment Assets [Abstract]
Property owned	1,744,252			$ 1,677,481
Less accumulated depreciation	(368,769)			(340,417)
Total property owned	1,375,483			1,337,064
Assets held for sale and assets of discontinued operations	37,552			37,708
Cash and cash equivalents	23,801	54,438		28,819	$ 66,698
Receivables and other assets	30,319			52,468
Unimproved land	15,195			18,455
TOTAL ASSETS	1,482,350			1,474,514
Amounts Not Allocated to Segments [Member]
Segment revenues and net operating income [Abstract]
Real estate expenses	1,707	1,838
Net operating income (loss)	(1,707)	(1,838)
Multi-Family Residential [Member] | Operating Segments [Member]
Segment revenues and net operating income [Abstract]
Real estate revenue	38,430	35,042
Real estate expenses	17,465	14,879
Net operating income (loss)	20,965	20,163
Segment Assets [Abstract]
Property owned	1,313,469			1,260,541
Less accumulated depreciation	(254,380)			(232,592)
Total property owned	1,059,089			1,027,949
Healthcare [Member] | Operating Segments [Member]
Segment revenues and net operating income [Abstract]
Real estate revenue	11,378	11,541
Real estate expenses	4,285	4,192
Net operating income (loss)	7,093	7,349
Segment Assets [Abstract]
Property owned	324,197			323,148
Less accumulated depreciation	(89,561)			(86,139)
Total property owned	234,636			237,009
All Other [Member] | Operating Segments [Member]
Segment revenues and net operating income [Abstract]
Real estate revenue	2,927	3,028
Real estate expenses	793	725
Net operating income (loss)	2,134	$ 2,303
Segment Assets [Abstract]
Property owned	106,586			93,792
Less accumulated depreciation	(24,828)			(21,686)
Total property owned	$ 81,758			$ 72,106