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EQUITY - Equity Awards (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Jul. 31, 2018 | Jul. 31, 2017 | Apr. 30, 2018
Equity |  |  |
Noncontrolling interests - Operating Partnership (in shares) | 13,895,000 |  | 14,099,000
Common stock outstanding (in shares) | 119,507,000 |  | 119,526,000
Units converted to common stock (in shares) | 90,000 | 960,000 |
Aggregate cost of stock conversion | $ 480 | $ 5,700 |
Average price of shares issued (in dollars per share) | $ 5.31 | $ 5.97 |
2015 Incentive Plan [Member] |  |  |
Equity |  |  |
Equity awards issued (in shares) | 43,000 | 75,000 |
Total grant-date value shares issued | $ 264 | $ 445 |
Exercise of Exchange Rights [Member] |  |  |
Equity |  |  |
Units converted to common stock (in shares) | 114,000 | 0 |
Aggregate cost of stock conversion | $ 291 |  |

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