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DISCONTINUED OPERATIONS - Effect on Net Income from Properties Classified as Discontinued Operations (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jul. 31, 2018 | Jul. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
REVENUE | $ 45,946 | $ 40,978
EXPENSES |  |
Property operating expenses, excluding real estate taxes | 14,459 | 12,874
Depreciation and amortization | 18,612 | 25,338
Impairment of real estate investments |  | 256
TOTAL EXPENSES | 43,603 | 48,964
Interest expense | (8,385) | (8,131)
Loss on extinguishment of debt | (552) | (199)
Interest income | 481 | 21
Other income | 35 | 207
Gain on sale of discontinued operations | 9,794 | 124
INCOME (LOSS) FROM DISCONTINUED OPERATIONS | 570 | 2,685
Discontinued Operations, Disposed of by Sale [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
REVENUE | 0 | 11,955
EXPENSES |  |
Property operating expenses, excluding real estate taxes | 0 | 2,257
Real estate taxes | 0 | 1,961
Depreciation and amortization | 0 | 3,589
Impairment of real estate investments | 0 | 0
TOTAL EXPENSES | 0 | 7,879
Operating income | 0 | 4,076
Interest expense | 0 | (1,985)
Loss on extinguishment of debt | 0 | 0
Interest income | 0 | 544
Other income | 0 | 50
Income from discontinued operations before gain on sale | 0 | 2,685
Gain on sale of discontinued operations | 570 | 0
INCOME (LOSS) FROM DISCONTINUED OPERATIONS | 570 | 2,685
Management Service [Member] |  |
EXPENSES |  |
Property management expense | 1,367 | 1,356
Management Service [Member] | Discontinued Operations, Disposed of by Sale [Member] |  |
EXPENSES |  |
Property management expense | $ 0 | $ 72

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