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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (unaudited) - USD ($) shares in Thousands, $ in Thousands | Series A Preferred Stock [Member] ACCUMULATED DISTRIBUTIONS IN EXCESS OF NET INCOME [Member] | Series A Preferred Stock [Member] | Series B Preferred Stock [Member] ACCUMULATED DISTRIBUTIONS IN EXCESS OF NET INCOME [Member] | Series B Preferred Stock [Member] | Series C Preferred Stock [Member] PREFERRED SHARES [Member] | Series C Preferred Stock [Member] ACCUMULATED DISTRIBUTIONS IN EXCESS OF NET INCOME [Member] | Series C Preferred Stock [Member] | PREFERRED SHARES [Member] | Common Shares and Limited Partnership Units [Member] | ACCUMULATED DISTRIBUTIONS IN EXCESS OF NET INCOME [Member] | NONREDEEMABLE NONCONTROLLING INTERESTS [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Apr. 30, 2016 |  |  |  |  |  |  |  | $ 138,674 | $ 922,084 | $ (442,000) | $ 99,504 | $ 718,262
Balance (in shares) at Apr. 30, 2016 |  |  |  |  |  |  |  | 5,750 | 121,091 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to controlling interests and noncontrolling interests |  |  |  |  |  |  |  |  |  | (10,043) | (18,116) | (28,159)
Distributions - common shares and units |  |  |  |  |  |  |  |  |  | (31,556) | (4,234) | (35,790)
Distributions - preferred shares | $ (1,186) | $ (1,186) | $ (4,571) | $ (4,571) |  |  |  |  |  |  |  | (5,757)
Shares issued and share-based compensation |  |  |  |  |  |  |  |  | $ 1,218 |  |  | 1,218
Shares issued and share-based compensation (in shares) |  |  |  |  |  |  |  |  | 553 |  |  |
Redemption of units for common shares |  |  |  |  |  |  |  |  | $ 134 |  | (134) |
Redemption of units for common shares (in shares) |  |  |  |  |  |  |  |  | 57 |  |  |
Contributions from nonredeemable noncontrolling interests - consolidated real estate entities |  |  |  |  |  |  |  |  |  |  | 7,150 | 7,150
Distributions to nonredeemable noncontrolling interests - consolidated real estate entities |  |  |  |  |  |  |  |  |  |  | (155) | (155)
Acquisition of nonredeemable noncontrolling interests – consolidated real estate entities |  |  |  |  |  |  |  |  | $ (2,677) |  | (2,261) | (4,938)
Other |  |  |  |  |  |  |  |  |  |  | (615) | (615)
Balance at Oct. 31, 2016 |  |  |  |  |  |  |  | $ 138,674 | $ 920,759 | (489,356) | 81,139 | 651,216
Balance (in shares) at Oct. 31, 2016 |  |  |  |  |  |  |  | 5,750 | 121,701 |  |  |
Balance at Apr. 30, 2017 |  |  |  |  |  |  |  | $ 111,357 | $ 916,121 | (466,541) | 75,157 | 636,094
Balance (in shares) at Apr. 30, 2017 |  |  |  |  |  |  |  | 4,600 | 121,199 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to controlling interests and noncontrolling interests |  |  |  |  |  |  |  |  |  | 1,557 | (1,328) | 229
Distributions - common shares and units |  |  |  |  |  |  |  |  |  | (16,881) | (2,089) | (18,970)
Distributions - preferred shares |  |  | $ (4,571) | $ (4,571) |  | $ (527) | $ (527) |  |  |  |  | (5,098)
Shares issued and share-based compensation |  |  |  |  |  |  |  |  | $ 844 |  |  | 844
Shares issued and share-based compensation (in shares) |  |  |  |  |  |  |  |  | 75 |  |  |
Series C preferred shares issued |  |  |  |  | $ 99,467 |  | $ 99,467 |  |  |  |  |
Series C preferred shares issued (in shares) |  |  |  |  | 4,118 |  |  |  |  |  |  |
Redemption of units for cash |  |  |  |  |  |  |  |  |  |  | (5,982) | (5,982)
Shares repurchased |  |  |  |  |  |  |  | $ (111,357) | $ (6,253) | (3,649) |  | (121,259)
Shares repurchased (in shares) |  |  |  |  |  |  |  | (4,600) | (1,080) |  |  |
Contributions from nonredeemable noncontrolling interests - consolidated real estate entities |  |  |  |  |  |  |  |  |  |  | 239 | 239
Distributions to nonredeemable noncontrolling interests - consolidated real estate entities |  |  |  |  |  |  |  |  |  |  | (41) | (41)
Other |  |  |  |  |  |  |  |  | $ (29) |  |  | (29)
Other (in shares) |  |  |  |  |  |  |  |  | (5) |  |  |
Balance at Oct. 31, 2017 |  |  |  |  |  |  |  | $ 99,467 | $ 910,683 | $ (490,612) | $ 65,956 | $ 585,494
Balance (in shares) at Oct. 31, 2017 |  |  |  |  |  |  |  | 4,118 | 120,189 |  |  |

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