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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2014
REVENUE |  |  |
Real estate rentals | $ 170,698 | $ 159,969 | $ 145,028
Tenant reimbursement | 17,622 | 19,352 | 19,562
TOTAL REVENUE | 188,320 | 179,321 | 164,590
EXPENSES |  |  |
Property operating expenses, excluding real estate taxes | 58,859 | 53,535 | 50,552
Real estate taxes | 20,241 | 19,602 | 18,704
Depreciation and amortization | 49,832 | 42,784 | 39,712
Impairment of real estate investments | 5,543 | 4,663 | 7,700
General and administrative expenses | 11,267 | 11,824 | 10,743
Acquisition and investment related costs | 830 | 362 | 279
Other expenses | 2,231 | 1,647 | 1,850
TOTAL EXPENSES | 148,803 | 134,417 | 129,540
Gain on involuntary conversion |  |  | 2,480
Operating income | 39,517 | 44,904 | 37,530
Interest expense | (35,768) | (34,447) | (33,729)
Loss on extinguishment of debt | (106) |  |
Interest income | 2,256 | 2,238 | 1,906
Other income | 317 | 718 | 242
Income before gain (loss) on sale of real estate and other investments, gain on bargain purchase and income (loss) from discontinued operations | 6,216 | 13,413 | 5,949
Gain (loss) on sale of real estate and other investments | 9,640 | 6,093 | (51)
Gain on bargain purchase | 3,424 |  |
Income from continuing operations | 19,280 | 19,506 | 5,898
Income (loss) from discontinued operations | 57,322 | 9,178 | (22,838)
NET INCOME (LOSS) | 76,602 | 28,684 | (16,940)
Net (income) loss attributable to noncontrolling interests - Operating Partnership | (7,032) | (1,526) | 4,676
Net loss (income) attributable to noncontrolling interests – consolidated real estate entities | 2,436 | (3,071) | (910)
Net income (loss) attributable to Investors Real Estate Trust | 72,006 | 24,087 | (13,174)
Dividends to preferred shareholders | (11,514) | (11,514) | (11,514)
NET INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS | $ 60,492 | $ 12,573 | $ (24,688)
Earnings (loss) per common share from continuing operations - Investors Real Estate Trust - basic and diluted (in dollars per share) | $ 0.08 | $ 0.04 | $ (0.05)
Earnings per common share from discontinued operations - Investors Real Estate Trust - basic and diluted (in dollars per share) | 0.41 | 0.07 | (0.18)
NET INCOME (LOSS) PER COMMON SHARE - BASIC & DILUTED (in dollars per share) | $ 0.49 | $ 0.11 | $ (0.23)

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Data Type: | xbrli:monetaryItemType
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- Definition The aggregate revenue from real estate operations during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_RealEstateRevenueNet
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6419918&loc=d3e35301-107843 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RevenuesAbstract
Namespace Prefix: | us-gaap_
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Period Type: | duration

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- Definition In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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