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v3.3.1.900

EQUITY (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jan. 31, 2016 | Jul. 31, 2015 | Jan. 31, 2015 | Jul. 31, 2014 | Jan. 31, 2016 | Jan. 31, 2015 | Aug. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Aggregate offering price |  |  |  |  | $ 75,000,000 |  |
Aggregate cost of common shares repurchased |  |  |  |  | $ 35,000,000 |  |
Units converted to common shares (in shares) | 26,800 |  | 333,000 |  | 180,600 | 6,700,000 |
Units converted to common shares | $ 125,000 |  | $ 811,000 |  | $ 981,000 | $ 38,500,000 |
Share Repurchase Program [Member] |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Aggregate gross sales price of common share of beneficial interest allowed to be repurchased |  |  |  |  |  |  | $ 50,000,000
Common shares repurchased (in shares) | 1,800,000 |  |  |  | 4,600,000 |  |
Aggregate cost of common shares repurchased | $ 13,100,000 |  |  |  | $ 35,000,000 |  |
Average price of shares issued (in dollars per share) | $ 7.30 |  |  |  | $ 7.54 |  |
2008 Incentive Award Plan [Member] |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Shares issued (in shares) |  | 220,000 |  | 204,000 |  |  |
Shares issued |  | $ 1,600,000 |  | $ 1,900,000 |  |  |
Restricted shares (in shares) |  | 108,000 |  |  |  |  |
Distribution Reinvestment and Share Purchase Plan [Member] |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Shares issued (in shares) | 0 |  | 2,000,000 |  | 821,000 | 6,200,000 |
Shares issued | $ 0 |  | $ 16,100,000 |  | $ 5,600,000 | $ 50,900,000 |
Shares registered (in shares) |  |  |  |  | 10,000 |  |
Average price of shares issued (in dollars per share) | $ 0 |  | $ 8.06 |  | $ 6.85 | $ 8.20 |
Distribution Reinvestment Waiver [Member] |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Shares issued (in shares) |  |  |  |  |  | 926,000 |
Shares issued |  |  |  |  |  | $ 8,000,000 |
Average price of shares issued (in dollars per share) |  |  |  |  |  | $ 8.64 |

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