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OPERATING SEGMENTS (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Apr. 30, 2015 USD ($) Segment | Apr. 30, 2014 USD ($) | Apr. 30, 2013 USD ($) | Apr. 30, 2012 USD ($)
OPERATING SEGMENTS [Abstract] |  |  |  |
Number of reportable segments | Segment | 5 |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |
Real estate revenue | $ 279,670 | $ 265,482 | $ 248,058 |
Real estate expenses | 110,997 | 108,487 | 99,059 |
Gain on involuntary conversion | 0 | 2,480 | 5,084 |
Net operating income | 168,673 | 159,475 | 154,083 |
TRS senior housing revenue | 3,520 | 1,627 | 0 |
TRS senior housing expenses | (2,997) | (1,331) | 0 |
Depreciation/amortization | (70,607) | (70,918) | (62,333) |
Administrative expenses | (11,824) | (10,743) | (8,494) |
Other expenses | (2,010) | (2,132) | (2,173) |
Impairment of real estate investments | (6,105) | (42,566) |  |
Interest expense | (59,020) | (59,142) | (61,154) |
Interest and other income | 2,961 | 2,391 | 748 |
Income (loss) before gain (loss) on sale of real estate and other investments and income from discontinued operations | 22,591 | (23,339) | 20,677 |
Gain (Loss) on sale of real estate and other investments | 6,093 | (51) | 0 |
Income (loss) from continuing operations | 28,684 | (23,390) | 20,677 |
Income (loss) from discontinued operations | 0 | 6,450 | 9,295 |
NET INCOME (LOSS) | 28,684 | (16,940) | 29,972 |
Segment Assets [Abstract] |  |  |  |
Property owned | 2,098,037 | 1,996,031 |  |
Less accumulated depreciation | (448,987) | (424,288) |  |
Total property owned | 1,649,050 | 1,571,743 |  |
Real estate held for sale | 22,912 | 2,951 |  |
Cash and cash equivalents | 48,970 | 47,267 | 94,133 | $ 39,989
Other investments | 329 | 329 |  |
Receivables and other assets | 96,755 | 119,458 |  |
Development in progress | 153,994 | 104,609 |  |
Unimproved land | 25,827 | 22,864 |  |
TOTAL ASSETS | 1,997,837 | 1,869,221 |  |
Multi-Family Residential [Member] | Operating Segments [Member] |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |
Real estate revenue | 118,526 | 102,059 | 89,923 |
Real estate expenses | 51,172 | 46,138 | 38,223 |
Gain on involuntary conversion |  | 2,480 | 3,852 |
Net operating income | 67,354 | 58,401 | 55,552 |
Segment Assets [Abstract] |  |  |  |
Property owned | 946,520 | 753,731 |  |
Less accumulated depreciation | (180,414) | (158,100) |  |
Total property owned | 766,106 | 595,631 |  |
Office [Member] | Operating Segments [Member] |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |
Real estate revenue | 74,978 | 77,440 | 75,962 |
Real estate expenses | 36,491 | 38,190 | 37,267 |
Gain on involuntary conversion |  | 0 | 0 |
Net operating income | 38,487 | 39,250 | 38,695 |
Segment Assets [Abstract] |  |  |  |
Property owned | 480,980 | 544,628 |  |
Less accumulated depreciation | (115,710) | (121,892) |  |
Total property owned | 365,270 | 422,736 |  |
Healthcare [Member] | Operating Segments [Member] |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |
Real estate revenue | 66,230 | 65,258 | 61,975 |
Real estate expenses | 17,176 | 17,127 | 16,779 |
Gain on involuntary conversion |  | 0 | 0 |
Net operating income | 49,054 | 48,131 | 45,196 |
Segment Assets [Abstract] |  |  |  |
Property owned | 497,997 | 525,028 |  |
Less accumulated depreciation | (113,062) | (105,843) |  |
Total property owned | 384,935 | 419,185 |  |
Industrial [Member] | Operating Segments [Member] |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |
Real estate revenue | 6,491 | 6,894 | 6,700 |
Real estate expenses | 1,536 | 2,043 | 1,871 |
Gain on involuntary conversion |  | 0 | 0 |
Net operating income | 4,955 | 4,851 | 4,829 |
Segment Assets [Abstract] |  |  |  |
Property owned | 60,611 | 55,375 |  |
Less accumulated depreciation | (11,256) | (10,198) |  |
Total property owned | 49,355 | 45,177 |  |
Retail [Member] | Operating Segments [Member] |  |  |  |
Segment revenues and net operating income [Abstract] |  |  |  |
Real estate revenue | 13,445 | 13,831 | 13,498 |
Real estate expenses | 4,622 | 4,989 | 4,919 |
Gain on involuntary conversion |  | 0 | 1,232 |
Net operating income | 8,823 | 8,842 | $ 9,811 |
Segment Assets [Abstract] |  |  |  |
Property owned | 111,929 | 117,269 |  |
Less accumulated depreciation | (28,545) | (28,255) |  |
Total property owned | $ 83,384 | $ 89,014 |  |

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