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DISCONTINUED OPERATIONS (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2013 | Jan. 31, 2013 | Oct. 31, 2012 | Jul. 31, 2012 | Apr. 30, 2012 | Jan. 31, 2012 | Oct. 31, 2011 | Jul. 31, 2011 | Apr. 30, 2013 | Apr. 30, 2012 | Apr. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties classified as held for sale | 0 |  |  |  | 8 |  |  |  | 0 | 8 | 0
REVENUE |  |  |  |  |  |  |  |  |  |  |
Real estate rentals |  |  |  |  |  |  |  |  | $ 212,969,000 | $ 196,149,000 | $ 189,245,000
Tenant reimbursement |  |  |  |  |  |  |  |  | 46,437,000 | 42,929,000 | 44,931,000
TOTAL REVENUE | 67,011,000 | 65,976,000 | 64,689,000 | 61,730,000 | 59,932,000 | 60,291,000 | 59,946,000 | 58,909,000 | 259,406,000 | 239,078,000 | 234,176,000
EXPENSES |  |  |  |  |  |  |  |  |  |  |
Depreciation/amortization related to real estate investments |  |  |  |  |  |  |  |  | 61,996,000 | 56,426,000 | 55,080,000
Utilities |  |  |  |  |  |  |  |  | 19,172,000 | 17,442,000 | 18,020,000
Maintenance |  |  |  |  |  |  |  |  | 29,237,000 | 26,354,000 | 28,955,000
Real estate taxes |  |  |  |  |  |  |  |  | 34,380,000 | 31,581,000 | 30,637,000
Insurance |  |  |  |  |  |  |  |  | 3,927,000 | 3,502,000 | 2,256,000
Property management expenses |  |  |  |  |  |  |  |  | 15,408,000 | 18,651,000 | 20,348,000
Other property expenses |  |  |  |  |  |  |  |  | 1,008,000 | (142,000) | 665,000
Other expenses |  |  |  |  |  |  |  |  | 2,173,000 | 1,898,000 | 1,747,000
Amortization related to non-real estate investments |  |  |  |  |  |  |  |  | 3,274,000 | 3,216,000 | 2,679,000
Impairment of real estate investments |  |  |  |  |  |  |  |  | 305,000 | 428,000 | 0
TOTAL EXPENSES |  |  |  |  |  |  |  |  | 179,374,000 | 166,309,000 | 167,609,000
Operating income |  |  |  |  |  |  |  |  | 85,116,000 | 73,043,000 | 66,567,000
Interest expense |  |  |  |  |  |  |  |  | (62,900,000) | (64,066,000) | (62,735,000)
Interest income |  |  |  |  |  |  |  |  | 222,000 | 148,000 | 259,000
Other income |  |  |  |  |  |  |  |  | 526,000 | 638,000 | 282,000
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  | 6,885,000 | 349,000 | 19,365,000
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | 7,008,000 | (57,000) | 19,978,000
Property Sale Data |  |  |  |  |  |  |  |  |  |  |
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  | 6,885,000 | 349,000 | 19,365,000
Multi-Family Residential [Member] |  |  |  |  |  |  |  |  |  |  |
REVENUE |  |  |  |  |  |  |  |  |  |  |
TOTAL REVENUE |  |  |  |  |  |  |  |  | 90,759,000 | 72,500,000 | 65,229,000
Commercial-Office [Member] |  |  |  |  |  |  |  |  |  |  |
REVENUE |  |  |  |  |  |  |  |  |  |  |
TOTAL REVENUE |  |  |  |  |  |  |  |  | 77,162,000 | 74,334,000 | 77,747,000
Commercial-Healthcare [Member] |  |  |  |  |  |  |  |  |  |  |
REVENUE |  |  |  |  |  |  |  |  |  |  |
TOTAL REVENUE |  |  |  |  |  |  |  |  | 61,975,000 | 64,511,000 | 64,879,000
Commercial-Industrial [Member] |  |  |  |  |  |  |  |  |  |  |
REVENUE |  |  |  |  |  |  |  |  |  |  |
TOTAL REVENUE |  |  |  |  |  |  |  |  | 14,911,000 | 14,325,000 | 13,165,000
Commercial-Retail [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties classified as held for sale |  |  |  |  | 1 |  |  |  |  | 1 |
REVENUE |  |  |  |  |  |  |  |  |  |  |
TOTAL REVENUE |  |  |  |  |  |  |  |  | 14,599,000 | 13,408,000 | 13,156,000
Multi Family Residential -Condominium Units [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties classified as held for sale |  |  |  |  | 8 |  |  |  |  | 8 |
Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |
REVENUE |  |  |  |  |  |  |  |  |  |  |
Real estate rentals |  |  |  |  |  |  |  |  | 1,818,000 | 2,852,000 | 9,056,000
Tenant reimbursement |  |  |  |  |  |  |  |  | 1,000 | 62,000 | 112,000
TOTAL REVENUE |  |  |  |  |  |  |  |  | 1,819,000 | 2,914,000 | 9,168,000
EXPENSES |  |  |  |  |  |  |  |  |  |  |
Depreciation/amortization related to real estate investments |  |  |  |  |  |  |  |  | 479,000 | 682,000 | 1,911,000
Utilities |  |  |  |  |  |  |  |  | 67,000 | 225,000 | 776,000
Maintenance |  |  |  |  |  |  |  |  | 132,000 | 246,000 | 993,000
Real estate taxes |  |  |  |  |  |  |  |  | 78,000 | 196,000 | 853,000
Insurance |  |  |  |  |  |  |  |  | 25,000 | 52,000 | 158,000
Property management expenses |  |  |  |  |  |  |  |  | 115,000 | 272,000 | 1,047,000
Other property expenses |  |  |  |  |  |  |  |  | 16,000 | 4,000 | 72,000
Other expenses |  |  |  |  |  |  |  |  | 0 | 67,000 | 28,000
Amortization related to non-real estate investments |  |  |  |  |  |  |  |  | 0 | 0 | 4,000
Impairment of real estate investments |  |  |  |  |  |  |  |  | 0 | 428,000 | 0
TOTAL EXPENSES |  |  |  |  |  |  |  |  | 912,000 | 2,172,000 | 5,842,000
Operating income |  |  |  |  |  |  |  |  | 907,000 | 742,000 | 3,326,000
Interest expense |  |  |  |  |  |  |  |  | (786,000) | (1,164,000) | (2,718,000)
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 5,000
Other income |  |  |  |  |  |  |  |  | 2,000 | 16,000 | 0
Income (loss) from discontinued operations before gain on sale |  |  |  |  |  |  |  |  | 123,000 | (406,000) | 613,000
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  | 6,885,000 | 349,000 | 19,365,000
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | 7,008,000 | (57,000) | 19,978,000
Property Sale Data |  |  |  |  |  |  |  |  |  |  |
Sales price |  |  |  |  |  |  |  |  | 26,273,000 | 3,237,000 | 83,330,000
Net book value and sales costs |  |  |  |  |  |  |  |  | (19,388,000) | (2,888,000) | (63,965,000)
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  | 6,885,000 | 349,000 | 19,365,000
Discontinued Operations [Member] | Multi-Family Residential [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | 3 |  |  |  |  |  |  |  | 3 |  |
EXPENSES |  |  |  |  |  |  |  |  |  |  |
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | 3,653,000 | 161,000 | 19,268,000
Discontinued Operations [Member] | Commercial-Office [Member] |  |  |  |  |  |  |  |  |  |  |
EXPENSES |  |  |  |  |  |  |  |  |  |  |
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | 0 | 0 | 0
Discontinued Operations [Member] | Commercial-Healthcare [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | 1 |  |  |  |  |  |  |  | 1 |  |
EXPENSES |  |  |  |  |  |  |  |  |  |  |
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | 3,419,000 | (465,000) | (84,000)
Discontinued Operations [Member] | Commercial-Industrial [Member] |  |  |  |  |  |  |  |  |  |  |
EXPENSES |  |  |  |  |  |  |  |  |  |  |
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | 0 | 0 | 726,000
Discontinued Operations [Member] | Commercial-Retail [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | 1 |  |  |  |  |  |  |  | 1 |  |
EXPENSES |  |  |  |  |  |  |  |  |  |  |
INCOME (LOSS) FROM DISCONTINUED OPERATIONS |  |  |  |  |  |  |  |  | $ (64,000) | $ 247,000 | $ 68,000
Discontinued Operations [Member] | Multi Family Residential -Condominium Units [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | 4 |  |  |  |  |  |  |  | 4 |  |

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- Definition The cost of borrowed funds accounted for as interest that was charged against earnings during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 9 -Chapter V -Subsection II -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. + Details
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- Definition Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(b)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
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- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 + Details
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- Definition Amount of general expenses not normally included in Other Operating Costs and 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 210.5-03.6) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 6 -Article 5 + Details
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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition The aggregate costs related to management of owned properties 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 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 + Details
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- Definition A contract to provide coverage or protection in exchange for a payment or "premium". Examples of insurance protection include liability and property insurance. The entity paying the premiums for the protection will have insurance expense and possibly an asset, Prepaid Insurance (if the premiums are paid in advance). + 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 210.5-03.6) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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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=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 2, 17 -Chapter 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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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=6880815&loc=d3e20235-122688 + Details
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