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EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2014 | Oct. 31, 2013
EARNINGS PER SHARE [Abstract] |  |  |  |
Redemption basis |  |  | one-for-one |
Period to hold the beneficial interest, minimum |  |  | 1 year |
NUMERATOR [Abstract] |  |  |  |
Income from continuing operations - Investors Real Estate Trust | $ 5,114 | $ 4,334 | $ 4,963 | $ 6,918
Income from discontinued operations - Investors Real Estate Trust | 0 | 4,453 | 0 | 4,947
Net income attributable to Investors Real Estate Trust | 5,114 | 8,787 | 4,963 | 11,865
Dividends to preferred shareholders | (2,878) | (2,878) | (5,757) | (5,757)
Numerator for basic earnings per share - net income available to common shareholders | 2,236 | 5,909 | (794) | 6,108
Noncontrolling interests - Operating Partnership | 363 | 1,226 | (39) | 1,276
Numerator for diluted earnings per share | $ 2,599 | $ 7,135 | $ (833) | $ 7,384
DENOMINATOR [Abstract] |  |  |  |
Denominator for basic earnings per share weighted average shares (in shares) | 117,034 | 104,861 | 114,033 | 103,606
Effect of convertible operating partnership units (in shares) | 16,261 | 21,852 | 18,565 | 21,834
Denominator for diluted earnings per share (in shares) | 133,295 | 126,713 | 132,598 | 125,440
Earnings (loss) per common share from continuing operations - Investors Real Estate Trust - basic and diluted | $ 0.02 | $ 0.01 | $ (0.01) | $ 0.01
Earnings per common share from discontinued operations - Investors Real Estate Trust - basic and diluted (in dollars per share) | $ 0 | $ 0.05 | $ 0 | $ 0.05
NET INCOME (LOSS) PER COMMON SHARE - BASIC & DILUTED | $ 0.02 | $ 0.06 | $ (0.01) | $ 0.06

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