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SEGMENT REPORTING (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 31, 2017 USD ($) segment | Oct. 31, 2018 USD ($) | Oct. 31, 2017 USD ($) | Oct. 31, 2018 USD ($) | Oct. 31, 2017 USD ($) | Apr. 30, 2016 segment | Apr. 30, 2018 USD ($) | Apr. 30, 2017 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Number of reportable segments | segment | 2 |  |  |  |  | 5 |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Real estate revenue |  | $ 45,638 | $ 41,866 | $ 91,584 | $ 82,844 |  |  |
Net operating income |  | 26,302 | 23,148 | 52,719 | 46,599 |  |  |
Casualty loss |  | (225) | (115) | (450) | (600) |  |  |
Depreciation/amortization |  | (19,191) | (17,270) | (37,803) | (42,608) |  |  |
Impairment of real estate investments |  |  |  | 0 | (256) |  |  |
General and administrative expenses |  | (3,374) | (3,118) | (7,244) | (7,120) |  |  |
Interest expense |  | (7,997) | (8,509) | (16,382) | (16,640) |  |  |
Loss on extinguishment of debt |  | (4) | (334) | (556) | (533) |  |  |
Interest and other income |  | 429 | 255 | 945 | 483 |  |  |
Income (loss) before gain on sale of real estate and other investments and income (loss) from discontinued operations |  | (5,379) | (7,315) | (11,457) | (23,403) |  |  |
Gain (loss) on sale of real estate and other investments |  | (232) | 5,324 | 8,992 | 5,448 |  |  |
Income (loss) from continuing operations |  | (5,611) | (1,991) | (2,465) | (17,955) |  |  |
Income (loss) from discontinued operations |  | 0 | 15,130 | 570 | 17,815 |  |  |
NET INCOME (LOSS) |  | (5,611) | 13,139 | (1,895) | (140) |  |  |
Segment Assets [Abstract] |  |  |  |  |  |  |  |
Property owned |  | 1,638,072 |  | 1,638,072 |  |  | $ 1,669,764 |
Less accumulated depreciation |  | (345,015) |  | (345,015) |  |  | (311,324) |
Total property owned |  | 1,293,057 |  | 1,293,057 |  |  | 1,358,440 |
Cash and cash equivalents |  | 12,777 |  | 12,777 |  |  | 11,891 | $ 0
Restricted cash | $ 3,782 | 5,085 | 3,782 | 5,085 | 3,782 |  | 4,225 |
Other assets |  | 29,769 |  | 29,769 |  |  | 30,297 |
Unimproved land |  | 6,522 |  | 6,522 |  |  | 11,476 |
Mortgage loans receivable |  | 10,530 |  | 10,530 |  |  | 10,329 |
TOTAL ASSETS |  | 1,357,740 |  | 1,357,740 |  |  | 1,426,658 |
Operating Segments [Member] | Multi-Family Residential [Member] |  |  |  |  |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Real estate revenue |  | 43,874 | 37,457 | 86,963 | 73,455 |  |  |
Net operating income |  | 25,106 | 20,256 | 49,709 | 40,521 |  |  |
Segment Assets [Abstract] |  |  |  |  |  |  |  |
Property owned |  | 1,580,260 |  | 1,580,260 |  |  | 1,606,421 |
Less accumulated depreciation |  | (328,075) |  | (328,075) |  |  | (294,477) |
Total property owned |  | 1,252,185 |  | 1,252,185 |  |  | 1,311,944 |
Operating Segments [Member] | All Other [Member] |  |  |  |  |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Real estate revenue |  | 1,764 | 4,409 | 4,621 | 9,389 |  |  |
Net operating income |  | 1,196 | 2,892 | 3,010 | 6,078 |  |  |
Segment Assets [Abstract] |  |  |  |  |  |  |  |
Property owned |  | 57,812 |  | 57,812 |  |  | 63,343 |
Less accumulated depreciation |  | (16,940) |  | (16,940) |  |  | (16,847) |
Total property owned |  | 40,872 |  | 40,872 |  |  | $ 46,496 |
Real Estate [Member] |  |  |  |  |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Property management expense |  | 19,336 | 18,718 | 38,865 | 36,245 |  |  |
Property management expense |  | (19,336) | (18,718) | (38,865) | (36,245) |  |  |
Real Estate [Member] | Operating Segments [Member] | Multi-Family Residential [Member] |  |  |  |  |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Property management expense |  | 18,768 | 17,201 | 37,254 | 32,934 |  |  |
Property management expense |  | (18,768) | (17,201) | (37,254) | (32,934) |  |  |
Real Estate [Member] | Operating Segments [Member] | All Other [Member] |  |  |  |  |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Property management expense |  | 568 | 1,517 | 1,611 | 3,311 |  |  |
Property management expense |  | (568) | (1,517) | (1,611) | (3,311) |  |  |
Management Service [Member] |  |  |  |  |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |  |  |  |  |
Property management expense |  | 1,319 | 1,372 | 2,686 | 2,728 |  |  |
Property management expense |  | $ (1,319) | $ (1,372) | $ (2,686) | $ (2,728) |  |  |

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