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DISCONTINUED OPERATIONS (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Jul. 31, 2012 | Jul. 31, 2011
DISCONTINUED OPERATIONS [Abstract] |  |
Number of apartment complexes sold | 2 |
Number of retail properties sold | 1 |
REVENUE |  |
Real estate rentals | $ 51,755 | $ 48,826
Tenant reimbursement | 10,655 | 10,731
TOTAL REVENUE | 62,410 | 59,557
EXPENSES |  |
Depreciation/amortization related to real estate investments | 15,453 | 14,139
Utilities | 4,231 | 3,985
Maintenance | 7,422 | 6,821
Real estate taxes | 8,387 | 7,799
Insurance | 921 | 876
Property management expenses | 4,107 | 5,378
Other expenses | 519 | 315
Amortization related to non-real estate investments | 833 | 734
TOTAL EXPENSES | 43,969 | 42,228
Interest expense | (16,517) | (15,881)
Interest income | 18 | 53
INCOME FROM DISCONTINUED OPERATIONS | (70) | (28)
Discontinued Operations [Member] |  |
REVENUE |  |
Real estate rentals | 9 | 74
Tenant reimbursement | 1 | (3)
TOTAL REVENUE | 10 | 71
EXPENSES |  |
Depreciation/amortization related to real estate investments | 0 | 27
Utilities | 0 | 13
Maintenance | 3 | 7
Real estate taxes | 3 | 4
Insurance | 1 | 1
Property management expenses | 0 | 3
TOTAL EXPENSES | 7 | 55
Interest expense | 0 | (44)
Income from discontinued operations before gain on sale | 3 | (28)
Gain on sale of discontinued operations | (73) | 0
INCOME FROM DISCONTINUED OPERATIONS | $ (70) | $ (28)

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